Updated 8 h ago

Vulnerability database

Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.

1,766exploited flaws on CISA’s list

36added in the last 30 days

542new WordPress flaws this week

391,181entries in the database

818 results · page 14 of 17

Dec 1, 2021MikroTik Router OS Directory Traversal VulnerabilityCVE-2018-14847 · Network & remote access · MikroTik · reported by MITREExploitedCritical 9.1
MikroTik RouterOS through 6.42 allows unauthenticated remote attackers to read arbitrary files and remote authenticated attackers to write arbitrary files due to a directory traversal vulnerability in the WinBox interface.
Product
RouterOS
On CISA’s list since
Dec 1, 2021 (federal fix deadline Jun 1, 2022)
What to do
Attackers are using this now. Install MikroTik’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com github.com
Dec 1, 2021Apache HTTP Server-Side Request Forgery (SSRF)CVE-2021-40438 · Websites & servers · Apache · reported by security@apache.orgExploitedRansomwareCritical 9
A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.
Product
Apache
On CISA’s list since
Dec 1, 2021 (federal fix deadline Dec 15, 2021)
What to do
Attackers are using this now. Install Apache’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog cert-portal.siemens.com httpd.apache.org
Dec 1, 2021Zoho ManageEngine ServiceDesk Plus Remote Code Execution VulnerabilityCVE-2021-44077 · Email & office · Zoho · reported by MITREExploitedCritical 9.8
Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014 are vulnerable to unauthenticated remote code execution
Product
ManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus
On CISA’s list since
Dec 1, 2021 (federal fix deadline Dec 15, 2021)
What to do
Attackers are using this now. Install Zoho’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com pitstop.manageengine.com
Nov 17, 2021Microsoft Exchange Server Remote Code Execution VulnerabilityCVE-2021-42321 · Email & office · Microsoft · reported by secure@microsoft.comExploitedRansomwareHigh 8.8
An authenticated attacker could leverage improper validation in cmdlet arguments within Microsoft Exchange and perform remote code execution.
Product
Exchange
On CISA’s list since
Nov 17, 2021 (federal fix deadline Dec 1, 2021)
What to do
Attackers are using this now. Install Microsoft’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com packetstormsecurity.com
Nov 17, 2021Microsoft Excel Security Feature BypassCVE-2021-42292 · Email & office · Microsoft · reported by secure@microsoft.comExploitedHigh 7.8
A security feature bypass vulnerability in Microsoft Excel would allow a local user to perform arbitrary code execution.
Product
Office
On CISA’s list since
Nov 17, 2021 (federal fix deadline Dec 1, 2021)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com portal.msrc.microsoft.com
Nov 17, 2021ExifTool Remote Code Execution VulnerabilityCVE-2021-22204 · Other software · Perl · reported by cve@gitlab.comExploitedMedium 6.8
Improper neutralization of user data in the DjVu file format in Exiftool versions 7.44 and up allows arbitrary code execution when parsing the malicious image
Product
Exiftool
On CISA’s list since
Nov 17, 2021 (federal fix deadline Dec 1, 2021)
What to do
Attackers are using this now. Install Perl’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com packetstormsecurity.com
Nov 3, 2021Apple iOS WebKit Use-After-Free VulnerabilityCVE-2021-30762 · Computers, phones & browsers · Apple · reported by product-security@apple.comExploitedHigh 8.8
Apple iOS WebKit contains a use-after-free vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Product
iOS
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Apple’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog support.apple.com support.apple.com
Nov 3, 2021Microsoft Defender Remote Code Execution VulnerabilityCVE-2021-1647 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 7.8
Microsoft Defender contains an unspecified vulnerability that allows for remote code execution.
Product
Defender
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com portal.msrc.microsoft.com
Nov 3, 2021Microsoft Office Outlook Security Feature Bypass VulnerabilityCVE-2017-11774 · Email & office · Microsoft · reported by secure@microsoft.comExploitedHigh 7.8
Microsoft Office Outlook contains a security feature bypass vulnerability due to improperly handling objects in memory. Successful exploitation allows an attacker to execute commands.
Product
Office
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog securityfocus.com securitytracker.com
Nov 3, 2021Ivanti Pulse Connect Secure Collaboration Suite Buffer Overflow VulnerabilityCVE-2021-22894 · Network & remote access · Ivanti · reported by support@hackerone.comExploitedHigh 8.8
Ivanti Pulse Connect Secure Collaboration Suite contains a buffer overflow vulnerabilities that allows a remote authenticated users to execute code as the root user via maliciously crafted meeting room.
Product
Pulse Connect Secure
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Ivanti’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog kb.pulsesecure.net kb.pulsesecure.net
Nov 3, 2021Oracle Fusion Middleware Unspecified VulnerabilityCVE-2012-3152 · Other software · Oracle · reported by secalert_us@oracle.comExploitedCritical 9.1
Oracle Fusion Middleware Reports Developer contains an unspecified vulnerability that allows remote attackers to affect confidentiality and integrity of affected systems.
Product
Fusion Middleware
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Oracle’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog blog.netinfiltration.com blog.netinfiltration.com
Nov 3, 2021DotNetNuke (DNN) Remote Code Execution VulnerabilityCVE-2017-9822 · Other software · DotNetNuke (DNN) · reported by security-alert@hpe.comExploitedRansomwareHigh 8.8
DotNetNuke (DNN) contains a vulnerability that may allow for remote code execution via cookie deserialization.
Product
DotNetNuke (DNN)
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install DotNetNuke (DNN)’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com dnnsoftware.com
Nov 3, 2021DotNetNuke (DNN) Inadequate Encryption Strength VulnerabilityCVE-2018-18325 · Other software · DotNetNuke (DNN) · reported by MITREExploitedHigh 7.5
DotNetNuke (DNN) contains an inadequate encryption strength vulnerability resulting from the use of a weak encryption algorithm to protect input parameters. This CVE ID resolves an incomplete patch for CVE-2018-15811.
Product
DotNetNuke (DNN)
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install DotNetNuke (DNN)’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com github.com
Nov 3, 2021Nagios XI Remote Code Execution VulnerabilityCVE-2019-15949 · Other software · Nagios · reported by MITREExploitedHigh 8.8
Nagios XI contains a remote code execution vulnerability in which a user can modify the check_plugin executable and insert malicious commands to execute as root.
Product
Nagios XI
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Nagios’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com packetstormsecurity.com
Nov 3, 2021Netis WF2419 Devices Remote Code Execution VulnerabilityCVE-2019-19356 · Other software · Netis · reported by MITREExploitedHigh 7.5
Netis WF2419 devices contains an unspecified vulnerability that allows an attacker to perform remote code execution as root through the router's web management page.
Product
WF2419 Devices
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Netis’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com github.com
Nov 3, 2021Mozilla Firefox And Thunderbird Use-After-Free VulnerabilityCVE-2020-6819 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgExploitedHigh 8.1
Mozilla Firefox and Thunderbird contain a race condition vulnerability when running the nsDocShell destructor under certain conditions. The race condition creates a use-after-free vulnerability, causing unspecified impacts.
Product
Firefox and Thunderbird
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Mozilla’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog bugzilla.mozilla.org usn.ubuntu.com
Nov 3, 2021Microsoft Windows Adobe Font Manager Library Remote Code Execution VulnerabilityCVE-2020-1020 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 8.8
Microsoft Windows Adobe Font Manager Library contains an unspecified vulnerability when handling specially crafted multi-master fonts (Adobe Type 1 PostScript format) that allows for remote code execution for all systems except Windows 10. For systems running Windows 10, an attacker who successfully exploited the vulnerability could execute code in an AppContainer sandbox context with limited privileges and capabilities.
Product
Windows
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog portal.msrc.microsoft.com portal.msrc.microsoft.com
Nov 3, 2021Microsoft Internet Explorer Scripting Engine Memory Corruption VulnerabilityCVE-2020-1380 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 7.8
Microsoft Internet Explorer contains a memory corruption vulnerability which can allow for remote code execution in the context of the current user.
Product
Internet Explorer
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com portal.msrc.microsoft.com
Nov 3, 2021Microsoft Windows MSHTML Platform Remote Code Execution VulnerabilityCVE-2021-33742 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 7.5
Microsoft Windows MSHTML Platform contains an unspecified vulnerability that allows for remote code execution.
Product
Windows
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog portal.msrc.microsoft.com portal.msrc.microsoft.com
Nov 3, 2021Adobe Acrobat and Reader Heap-based Buffer Overflow VulnerabilityCVE-2021-21017 · Email & office · Adobe · reported by AdobeExploitedHigh 8.8
Acrobat Acrobat and Reader contain a heap-based buffer overflow vulnerability that could allow an unauthenticated attacker to achieve code execution in the context of the current user.
Product
Acrobat and Reader
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Adobe’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog helpx.adobe.com helpx.adobe.com
Nov 3, 2021Microsoft Windows Adobe Font Manager Library Remote Code Execution VulnerabilityCVE-2020-0938 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 7.8
Microsoft Windows Adobe Font Manager Library contains an unspecified vulnerability when handling specially crafted multi-master fonts (Adobe Type 1 PostScript format) that allows for remote code execution for all systems except Windows 10. For systems running Windows 10, an attacker who successfully exploited the vulnerability could execute code in an AppContainer sandbox context with limited privileges and capabilities.
Product
Windows
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com portal.msrc.microsoft.com
Nov 3, 2021Microsoft Exchange Server Remote Code Execution VulnerabilityCVE-2020-17144 · Email & office · Microsoft · reported by secure@microsoft.comExploitedHigh 8.4
Microsoft Exchange Server improperly validates cmdlet arguments which allow an attacker to perform remote code execution.
Product
Exchange Server
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com portal.msrc.microsoft.com
Nov 3, 2021Yealink Device Management Server-Side Request Forgery (SSRF) VulnerabilityCVE-2021-27561 · Other software · Yealink · reported by MITREExploitedCritical 9.8
Yealink Device Management contains a server-side request forgery (SSRF) vulnerability that allows for unauthenticated remote code execution.
Product
Device Management
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Yealink’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog ssd-disclosure.com ssd-disclosure.com
Nov 3, 2021Microsoft Internet Explorer Remote Code Execution VulnerabilityCVE-2021-27085 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 8.8
Microsoft Internet Explorer contains an unspecified vulnerability that allows for remote code execution.
Product
Internet Explorer
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog msrc.microsoft.com portal.msrc.microsoft.com
Nov 3, 2021Apple iOS, iPadOS, macOS Use-After-Free VulnerabilityCVE-2021-30858 · Computers, phones & browsers · Apple · reported by product-security@apple.comExploitedHigh 8.8
Apple iOS, iPadOS, and macOS WebKit contain a use-after-free vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Product
iOS, iPadOS, and macOS
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Apple’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog seclists.org seclists.org
Nov 3, 2021Apache Struts Remote Code Execution VulnerabilityCVE-2018-11776 · Websites & servers · Apache · reported by security@apache.orgExploitedHigh 8.1
Apache Struts contains a vulnerability that allows for remote code execution under two circumstances. One, where the alwaysSelectFullNamespace option is true and the value isn't set for a result defined in underlying configurations and in same time, its upper package configuration have no or wildcard namespace. Or, using URL tag which doesn't have value and action set and in same time, its upper package configuration have no or wildcard namespace.
Product
Struts
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Apache’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com arubanetworks.com
Nov 3, 2021Microsoft Desktop Window Manager (DWM) Core Library Privilege Escalation VulnerabilityCVE-2021-33739 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedHigh 8.4
Microsoft Desktop Window Manager (DWM) Core Library contains an unspecified vulnerability that allows for privilege escalation.
Product
Windows
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Microsoft’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog portal.msrc.microsoft.com portal.msrc.microsoft.com
Nov 3, 2021Accellion FTA Server-Side Request Forgery (SSRF) VulnerabilityCVE-2021-27103 · Other software · Accellion · reported by MITREExploitedRansomwareCritical 9.8
Accellion FTA contains a server-side request forgery (SSRF) vulnerability exploited via a crafted POST request to wmProgressstat.html.
Product
FTA
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Accellion’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com accellion.com
Nov 3, 2021Adobe Acrobat and Reader Use-After-Free VulnerabilityCVE-2021-28550 · Email & office · Adobe · reported by AdobeExploitedHigh 8.8
Adobe Acrobat and Reader contains a use-after-free vulnerability that could allow an unauthenticated attacker to achieve code execution in the context of the current user.
Product
Acrobat and Reader
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Adobe’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog helpx.adobe.com helpx.adobe.com
Nov 3, 2021Adobe ColdFusion Unrestricted File Upload VulnerabilityCVE-2018-15961 · Websites & servers · Adobe · reported by AdobeExploitedCritical 9.8
Adobe ColdFusion contains an unrestricted file upload vulnerability that could allow for code execution.
Product
ColdFusion
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Adobe’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog securityfocus.com securitytracker.com
Nov 3, 2021Adobe Flash Player Use-After-Free VulnerabilityCVE-2018-4878 · Other software · Adobe · reported by AdobeExploitedRansomwareHigh 7.8
Adobe Flash Player contains a use-after-free vulnerability that could allow for code execution.
Product
Flash Player
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Adobe’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog blog.talosintelligence.com securityfocus.com
Nov 3, 2021Amcrest Cameras and NVR Stack-based Buffer Overflow VulnerabilityCVE-2020-5735 · Other software · Amcrest · reported by vulnreport@tenable.comExploitedHigh 8.8
Amcrest cameras and NVR contain a stack-based buffer overflow vulnerability through port 37777 that allows an unauthenticated, remote attacker to crash the device and possibly execute code.
Product
Cameras and Network Video Recorder (NVR)
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Amcrest’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com tenable.com
Nov 3, 2021Android Kernel Use-After-Free VulnerabilityCVE-2019-2215 · Computers, phones & browsers · Android · reported by security@android.comExploitedHigh 7.8
Android Kernel contains a use-after-free vulnerability in binder.c that allows for privilege escalation from an application to the Linux Kernel. This vulnerability was observed chained with CVE-2020-0041 and CVE-2020-0069 under exploit chain "AbstractEmu."
Product
Android Kernel
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Android’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com packetstormsecurity.com
Nov 3, 2021Apache Solr VelocityResponseWriter Plug-In Remote Code Execution VulnerabilityCVE-2019-17558 · Websites & servers · Apache · reported by security@apache.orgExploitedHigh 7.5
The Apache Solr VelocityResponseWriter plug-in contains an unspecified vulnerability which can allow for remote code execution.
Product
Solr
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Apache’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com issues.apache.org
Nov 3, 2021Apache Struts Remote Code Execution VulnerabilityCVE-2020-17530 · Websites & servers · Apache · reported by security@apache.orgExploitedCritical 9.8
Forced Object-Graph Navigation Language (OGNL) evaluation in Apache Struts, when evaluated on raw user input in tag attributes, can lead to remote code execution.
Product
Struts
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Apache’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog jvn.jp packetstormsecurity.com
Nov 3, 2021Apache Struts Remote Code Execution VulnerabilityCVE-2017-5638 · Websites & servers · Apache · reported by security@apache.orgExploitedRansomwareCritical 9.8
Apache Struts Jakarta Multipart parser allows for malicious file upload using the Content-Type value, leading to remote code execution.
Product
Struts
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Apache’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog blog.talosintelligence.com blog.trendmicro.com
Nov 3, 2021Apple iOS, iPadOS, and macOS WebKit Remote Code Execution VulnerabilityCVE-2021-1870 · Computers, phones & browsers · Apple · reported by product-security@apple.comExploitedCritical 9.8
Apple iOS, iPadOS, and macOS WebKit contain an unspecified logic vulnerability that allows a remote attacker to execute code. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Product
iOS, iPadOS, and macOS
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Apple’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog lists.fedoraproject.org lists.fedoraproject.org
Nov 3, 2021Apple iOS, iPadOS, and macOS WebKit Remote Code Execution VulnerabilityCVE-2021-1871 · Computers, phones & browsers · Apple · reported by product-security@apple.comExploitedCritical 9.8
Apple iOS, iPadOS, and macOS WebKit contain an unspecified logic vulnerability that allows a remote attacker to execute code. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Product
iOS, iPadOS, and macOS
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Apple’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog lists.fedoraproject.org support.apple.com
Nov 3, 2021Apple Multiple Products WebKit Storage Use-After-Free VulnerabilityCVE-2021-30661 · Computers, phones & browsers · Apple · reported by product-security@apple.comExploitedHigh 8.8
Apple iOS, iPadOS, macOS, tvOS, watchOS, and Safari WebKit Storage contain a use-after-free vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Product
Multiple Products
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Apple’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog support.apple.com support.apple.com
Nov 3, 2021Arcadyan Buffalo Firmware Path Traversal VulnerabilityCVE-2021-20090 · Network & remote access · Arcadyan · reported by vulnreport@tenable.comExploitedCritical 9.8
Arcadyan Buffalo firmware contains a path traversal vulnerability that could allow unauthenticated, remote attackers to bypass authentication and access sensitive information. This vulnerability affects multiple routers across several different vendors.
Product
Buffalo Firmware
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Arcadyan’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog kb.cert.org secpod.com
Nov 3, 2021Arm Trusted Firmware Out-of-Bounds Write VulnerabilityCVE-2021-27562 · Computers, phones & browsers · Arm · reported by MITREExploitedMedium 5.5
Arm Trusted Firmware contains an out-of-bounds write vulnerability allowing the non-secure (NS) world to trigger a system halt, overwrite secure data, or print out secure data when calling secure functions under the non-secure processing environment (NSPE) handler mode. This vulnerability affects Yealink Device Management servers.
Product
Trusted Firmware
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Arm’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog developer.arm.com git.trustedfirmware.org
Nov 3, 2021Arm Mali Graphics Processing Unit (GPU) Use-After-Free VulnerabilityCVE-2021-28663 · Computers, phones & browsers · Arm · reported by MITREExploitedHigh 8.8
Arm Mali Graphics Processing Unit (GPU) kernel driver contains a use-after-free vulnerability that may allow a non-privileged user to make improper operations on GPU memory to gain root privilege, and/or disclose information.
Product
Mali Graphics Processing Unit (GPU)
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Arm’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog developer.arm.com developer.arm.com
Nov 3, 2021Atlassian Crowd and Crowd Data Center Remote Code Execution VulnerabilityCVE-2019-11580 · Websites & servers · Atlassian · reported by security@atlassian.comExploitedRansomwareCritical 9.8
Atlassian Crowd and Crowd Data Center contain a remote code execution vulnerability resulting from a pdkinstall development plugin being incorrectly enabled in release builds.
Product
Crowd and Crowd Data Center
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Atlassian’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com securityfocus.com
Nov 3, 2021Cisco ASA and FTD Read-Only Path Traversal VulnerabilityCVE-2020-3452 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 7.5
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an improper input validation vulnerability when HTTP requests process URLs. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device.
Product
Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com packetstormsecurity.com
Nov 3, 2021Cisco ASA and FTD Cross-Site Scripting (XSS) VulnerabilityCVE-2020-3580 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedRansomwareMedium 6.1
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an insufficient input validation vulnerability for user-supplied input by the web services interface. Successful exploitation could allow an attacker to perform cross-site scripting (XSS) in the context of the interface or access sensitive browser-based information.
Product
Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Cisco’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog tools.cisco.com tools.cisco.com
Nov 3, 2021Cisco IOS and IOS XE Software Smart Install Remote Code Execution VulnerabilityCVE-2018-0171 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 9.8
Cisco IOS and IOS XE Software improperly validates packet data, allowing an unauthenticated, remote attacker to trigger a reload of an affected device, cause a denial-of-service (DoS) condition, or perform code execution on the affected device.
Product
IOS and IOS XE
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog securityfocus.com securitytracker.com
Nov 3, 2021Cisco IOS XR Software Discovery Protocol Format String VulnerabilityCVE-2020-3118 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 8.8
Cisco IOS XR improperly validates string input from certain fields in Cisco Discovery Protocol messages. Exploitation could allow an unauthenticated, adjacent attacker to execute code with administrative privileges or cause a reload on an affected device.
Product
IOS XR
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com tools.cisco.com
Nov 3, 2021Cisco IOS XR Software DVMRP Memory Exhaustion VulnerabilityCVE-2020-3566 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 8.6
Cisco IOS XR Distance Vector Multicast Routing Protocol (DVMRP) incorrectly handles Internet Group Management Protocol (IGMP) packets. Exploitation could allow an unauthenticated, remote attacker to immediately crash the IGMP process or make it consume available memory and eventually crash.
Product
IOS XR
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog tools.cisco.com tools.cisco.com
Nov 3, 2021Cisco IOS XR Software DVMRP Memory Exhaustion VulnerabilityCVE-2020-3569 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedHigh 8.6
Cisco IOS XR Distance Vector Multicast Routing Protocol (DVMRP) incorrectly handles Internet Group Management Protocol (IGMP) packets. Exploitation could allow an unauthenticated, remote attacker to immediately crash the IGMP process or make it consume available memory and eventually crash.
Product
IOS XR
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog tools.cisco.com tools.cisco.com
Nov 3, 2021Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service VulnerabilityCVE-2020-3161 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 9.8
Cisco IP Phones contain an improper input validation vulnerability for HTTP requests. Exploitation could allow an attacker to execute code remotely with root privileges or cause a denial-of-service (DoS) condition.
Product
Cisco IP Phones
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com tools.cisco.com

Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.

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