Critical security advisoryCriticalFlagged by our vulnerability database: PHP2Shell is on CISA’s exploited list. Most WordPress hosting runs PHP. See if your site is affectedFlagged by our vulnerability database: PHP2Shell is being exploited. DetailsExploited: PHP2Shell. Check your site
HuttenlocherTechnologies
Updated 2 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
588new WordPress flaws this week
391,288entries in the database

34 results

  • Sep 21, 2026Zyxel GS1900 Series Switches Stack-Based Buffer Overflow VulnerabilityCVE-2026-7273 · Network & remote access · Zyxel · reported by security@zyxel.com.twExploitedHigh 8.8

    Zyxel GS1900 series switches contain a stack-based buffer overflow vulnerability in the CGI program which could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

    Product
    GS1900 Series Switches
    On CISA’s list since
    Sep 21, 2026 (federal fix deadline Sep 24, 2026)
    What to do
    Attackers are using this now. Install Zyxel’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Jul 21, 2026DD-WRT Stack-Based Buffer Overflow VulnerabilityCVE-2021-27137 · Other software · DD-WRT · reported by MITREExploitedHigh 8.1

    DD-WRT contains a stack-based buffer overflow vulnerability that could allow an unauthenticated attacker to overflow an internal buffer used by UPnP and trigger a code execution vulnerability.

    Product
    DD-WRT
    On CISA’s list since
    Jul 21, 2026 (federal fix deadline Jul 24, 2026)
    What to do
    Attackers are using this now. Install DD-WRT’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • May 27, 2026TanStack Unspecified VulnerabilityCVE-2026-45321 · Other software · TanStack · reported by GitHubExploitedRansomwareCritical 9.6

    TanStack contains an unspecified vulnerability that allowed malicious versions of the product to be published to the npm registry to publish credential-stealing malware under a trusted identity.

    Product
    TanStack
    On CISA’s list since
    May 27, 2026 (federal fix deadline Jun 10, 2026)
    What to do
    Attackers are using this now. Install TanStack’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.
  • Mar 27, 2026F5 BIG-IP Stack-Based Buffer Overflow VulnerabilityCVE-2025-53521 · Network & remote access · F5 · reported by f5sirt@f5.comExploitedCritical 9.3

    F5 BIG-IP APM contains a stack-based buffer overflow vulnerability that could allow a threat actor to achieve remote code execution.

    Product
    BIG-IP
    On CISA’s list since
    Mar 27, 2026 (federal fix deadline Mar 30, 2026)
    What to do
    Attackers are using this now. Install F5’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Dec 15, 2025Gladinet CentreStack and Triofox Hard Coded Cryptographic VulnerabilityCVE-2025-14611 · Other software · Gladinet · reported by 5dacb0b8-2277-4717-899c-254586fe4912ExploitedHigh 7.1

    Gladinet CentreStack and TrioFox contain a hardcoded cryptographic keys vulnerability for their implementation of the AES cryptoscheme. This vulnerability degrades security for public exposed endpoints that may make use of it and may offer arbitrary local file inclusion when provided a specially crafted request without authentication.

    Product
    CentreStack and Triofox
    On CISA’s list since
    Dec 15, 2025 (federal fix deadline Jan 5, 2026)
    What to do
    Attackers are using this now. Install Gladinet’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Nov 4, 2025Gladinet CentreStack and Triofox Files or Directories Accessible to External Parties VulnerabilityCVE-2025-11371 · Other software · Gladinet · reported by 5dacb0b8-2277-4717-899c-254586fe4912ExploitedHigh 7.5

    Gladinet CentreStack and Triofox contains a files or directories accessible to external parties vulnerability that allows unintended disclosure of system files.

    Product
    CentreStack and Triofox
    On CISA’s list since
    Nov 4, 2025 (federal fix deadline Nov 25, 2025)
    What to do
    Attackers are using this now. Install Gladinet’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • May 14, 2025Fortinet Multiple Products Stack-Based Buffer Overflow VulnerabilityCVE-2025-32756 · Network & remote access · Fortinet · reported by psirt@fortinet.comExploitedCritical 9.8

    Fortinet FortiFone, FortiVoice, FortiNDR and FortiMail contain a stack-based overflow vulnerability that may allow a remote unauthenticated attacker to execute arbitrary code or commands via crafted HTTP requests.

    Product
    Multiple Products
    On CISA’s list since
    May 14, 2025 (federal fix deadline Jun 4, 2025)
    What to do
    Attackers are using this now. Install Fortinet’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Apr 28, 2025Qualitia Active! Mail Stack-Based Buffer Overflow VulnerabilityCVE-2025-42599 · Other software · Qualitia · reported by vultures@jpcert.or.jpExploitedCritical 9.8

    Qualitia Active! Mail contains a stack-based buffer overflow vulnerability that allows a remote, unauthenticated attacker to execute arbitrary or trigger a denial-of-service via a specially crafted request.

    Product
    Active! Mail
    On CISA’s list since
    Apr 28, 2025 (federal fix deadline May 19, 2025)
    What to do
    Attackers are using this now. Install Qualitia’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Apr 8, 2025Gladinet CentreStack and Triofox Use of Hard-coded Cryptographic Key VulnerabilityCVE-2025-30406 · Other software · Gladinet · reported by MITREExploitedCritical 9

    Gladinet CentreStack and Triofox contains a use of hard-coded cryptographic key vulnerability in the way that the application manages keys used for ViewState integrity verification. Successful exploitation allows an attacker to forge ViewState payloads for server-side deserialization, allowing for remote code execution.

    Product
    CentreStack
    On CISA’s list since
    Apr 8, 2025 (federal fix deadline Apr 29, 2025)
    What to do
    Attackers are using this now. Install Gladinet’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Apr 4, 2025Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow VulnerabilityCVE-2025-22457 · Network & remote access · Ivanti · reported by 3c1d8aa1-5a33-4ea4-8992-aadd6440af75ExploitedRansomwareCritical 9

    Ivanti Connect Secure, Policy Secure, and ZTA Gateways contains a stack-based buffer overflow vulnerability that allows a remote unauthenticated attacker to achieve remote code execution.

    Product
    Connect Secure, Policy Secure, and ZTA Gateways
    On CISA’s list since
    Apr 4, 2025 (federal fix deadline Apr 11, 2025)
    What to do
    Attackers are using this now. Install Ivanti’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.
  • Jan 8, 2025Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow VulnerabilityCVE-2025-0282 · Network & remote access · Ivanti · reported by 3c1d8aa1-5a33-4ea4-8992-aadd6440af75ExploitedRansomwareCritical 9

    Ivanti Connect Secure, Policy Secure, and ZTA Gateways contain a stack-based buffer overflow which can lead to unauthenticated remote code execution.

    Product
    Connect Secure, Policy Secure, and ZTA Gateways
    On CISA’s list since
    Jan 8, 2025 (federal fix deadline Jan 15, 2025)
    What to do
    Attackers are using this now. Install Ivanti’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.
  • Sep 9, 2024Linux Kernel PIE Stack Buffer Corruption Vulnerability CVE-2017-1000253 · Computers, phones & browsers · Linux · reported by MITREExploitedRansomwareHigh 7.8

    Linux kernel contains a position-independent executable (PIE) stack buffer corruption vulnerability in load_elf_ binary() that allows a local attacker to escalate privileges.

    Product
    Kernel
    On CISA’s list since
    Sep 9, 2024 (federal fix deadline Sep 30, 2024)
    What to do
    Attackers are using this now. Install Linux’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.
  • Sep 15, 2022Code Aurora ACDB Audio Driver Stack-based Buffer Overflow VulnerabilityCVE-2013-2597 · Other software · Code Aurora · reported by MITREExploitedHigh 8.4

    The Code Aurora audio calibration database (acdb) audio driver contains a stack-based buffer overflow vulnerability that allows for privilege escalation. Code Aurora is used in third-party products such as Qualcomm and Android.

    Product
    ACDB Audio Driver
    On CISA’s list since
    Sep 15, 2022 (federal fix deadline Oct 6, 2022)
    What to do
    Attackers are using this now. Install Code Aurora’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Sep 8, 2022MikroTik RouterOS Stack-Based Buffer Overflow VulnerabilityCVE-2018-7445 · Network & remote access · MikroTik · reported by MITREExploitedCritical 9.8

    In MikroTik RouterOS, a stack-based buffer overflow occurs when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system.

    Product
    RouterOS
    On CISA’s list since
    Sep 8, 2022 (federal fix deadline Sep 29, 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.
  • Jun 8, 2022Adobe Acrobat and Reader Stack-Based Buffer Overflow VulnerabilityCVE-2010-2883 · Email & office · Adobe · reported by AdobeExploitedHigh 7.3

    Adobe Acrobat and Reader contain a stack-based buffer overflow vulnerability that allows remote attackers to execute code or cause denial-of-service (DoS).

    Product
    Acrobat and Reader
    On CISA’s list since
    Jun 8, 2022 (federal fix deadline Jun 22, 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.
  • May 23, 2022Adobe Flash Player Stack-based Buffer Overflow VulnerabilityCVE-2018-5002 · Other software · Adobe · reported by AdobeExploitedHigh 7.8

    Adobe Flash Player have a stack-based buffer overflow vulnerability that could lead to remote code execution.

    Product
    Flash Player
    On CISA’s list since
    May 23, 2022 (federal fix deadline Jun 13, 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.
  • Apr 19, 2022WhatsApp VOIP Stack Buffer Overflow VulnerabilityCVE-2019-3568 · Other software · Meta Platforms · reported by cve-assign@fb.comExploitedCritical 9.8

    A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target phone number.

    Product
    WhatsApp
    On CISA’s list since
    Apr 19, 2022 (federal fix deadline May 10, 2022)
    What to do
    Attackers are using this now. Install Meta Platforms’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Apr 13, 2022Adobe Flash Player Stack-Based Buffer Overflow VulnerabilityCVE-2014-9163 · Other software · Adobe · reported by AdobeExploitedHigh 7.8

    Stack-based buffer overflow in Adobe Flash Player allows attackers to execute code remotely.

    Product
    Flash Player
    On CISA’s list since
    Apr 13, 2022 (federal fix deadline May 4, 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.
  • Apr 6, 2022Microsoft HTTP Protocol Stack Remote Code Execution VulnerabilityCVE-2021-31166 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comExploitedCritical 9.8

    Microsoft HTTP Protocol Stack contains a vulnerability in http.sys that allows for remote code execution.

    Product
    HTTP Protocol Stack
    On CISA’s list since
    Apr 6, 2022 (federal fix deadline Apr 27, 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.
  • Mar 28, 2022Microsoft Windows Kernel Stack-Based Buffer Overflow VulnerabilityCVE-2010-4398 · Computers, phones & browsers · Microsoft · reported by MITREExploitedHigh 7.8

    Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows allows local users to gain privileges, and bypass the User Account Control (UAC) feature.

    Product
    Windows
    On CISA’s list since
    Mar 28, 2022 (federal fix deadline Apr 21, 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.
  • Mar 25, 2022Adobe Reader and Adobe Acrobat Stack-Based Buffer Overflow VulnerabilityCVE-2009-0927 · Email & office · Adobe · reported by MITREExploitedHigh 8.8

    Stack-based buffer overflow in Adobe Reader and Adobe Acrobat allows remote attackers to execute arbitrary code.

    Product
    Reader and Acrobat
    On CISA’s list since
    Mar 25, 2022 (federal fix deadline Apr 15, 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.
  • Mar 3, 2022Cisco Small Business RV Series Routers Stack-based Buffer Overflow VulnerabilityCVE-2022-20699 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 10

    A vulnerability in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code elevate privileges, execute arbitrary commands, bypass authentication and authorization protections, fetch and run unsigned software, or cause a denial of service (DoS).

    Product
    Small Business RV160, RV260, RV340, and RV345 Series Routers
    On CISA’s list since
    Mar 3, 2022 (federal fix deadline Mar 17, 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.
  • Mar 3, 2022Treck TCP/IP stack Out-of-Bounds Read VulnerabilityCVE-2020-11899 · Other software · Treck TCP/IP stack · reported by MITREExploitedMedium 5.4

    The Treck TCP/IP stack contains an IPv6 out-of-bounds read vulnerability.

    Product
    IPv6
    On CISA’s list since
    Mar 3, 2022 (federal fix deadline Mar 17, 2022)
    What to do
    Attackers are using this now. Install Treck TCP/IP stack’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Mar 3, 2022Microsoft Office Stack-based Buffer Overflow VulnerabilityCVE-2010-3333 · Email & office · Microsoft · reported by secure@microsoft.comExploitedHigh 7.8

    A stack-based buffer overflow vulnerability exists in the parsing of RTF data in Microsoft Office and earlier allows an attacker to perform remote code execution.

    Product
    Office
    On CISA’s list since
    Mar 3, 2022 (federal fix deadline Mar 24, 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.
  • Mar 3, 2022Cisco Small Business RV Series Routers Stack-based Buffer Overflow VulnerabilityCVE-2022-20708 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 10

    A vulnerability in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code elevate privileges, execute arbitrary commands, bypass authentication and authorization protections, fetch and run unsigned software, or cause a denial of service (DoS).

    Product
    Small Business RV160, RV260, RV340, and RV345 Series Routers
    On CISA’s list since
    Mar 3, 2022 (federal fix deadline Mar 17, 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.
  • Mar 3, 2022Cisco Small Business RV Series Routers Stack-based Buffer Overflow VulnerabilityCVE-2022-20703 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 10

    A vulnerability in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code elevate privileges, execute arbitrary commands, bypass authentication and authorization protections, fetch and run unsigned software, or cause a denial of service (DoS).

    Product
    Small Business RV160, RV260, RV340, and RV345 Series Routers
    On CISA’s list since
    Mar 3, 2022 (federal fix deadline Mar 17, 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.
  • Mar 3, 2022Cisco Small Business RV Series Routers Stack-based Buffer Overflow VulnerabilityCVE-2022-20701 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 10

    A vulnerability in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code elevate privileges, execute arbitrary commands, bypass authentication and authorization protections, fetch and run unsigned software, or cause a denial of service (DoS).

    Product
    Small Business RV160, RV260, RV340, and RV345 Series Routers
    On CISA’s list since
    Mar 3, 2022 (federal fix deadline Mar 17, 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.
  • Mar 3, 2022Cisco Small Business RV Series Routers Stack-based Buffer Overflow VulnerabilityCVE-2022-20700 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 10

    A vulnerability in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code elevate privileges, execute arbitrary commands, bypass authentication and authorization protections, fetch and run unsigned software, or cause a denial of service (DoS).

    Product
    Small Business RV160, RV260, RV340, and RV345 Series Routers
    On CISA’s list since
    Mar 3, 2022 (federal fix deadline Mar 17, 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.
  • Jan 28, 2022SonicWall SMA 100 Appliances Stack-Based Buffer Overflow VulnerabilityCVE-2021-20038 · Network & remote access · SonicWall · reported by PSIRT@sonicwall.comExploitedRansomwareCritical 9.8

    SonicWall SMA 100 devies are vulnerable to an unauthenticated stack-based buffer overflow vulnerability where exploitation can result in code execution.

    Product
    SMA 100 Appliances
    On CISA’s list since
    Jan 28, 2022 (federal fix deadline Feb 11, 2022)
    What to do
    Attackers are using this now. Install SonicWall’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.
  • Nov 3, 2021SaltStack Salt Shell Injection VulnerabilityCVE-2020-16846 · Other software · SaltStack · reported by MITREExploitedCritical 9.8

    SaltStack Salt allows an unauthenticated user with network access to the Salt API to use shell injections to run code on the Salt API using the SSH client. This vulnerability affects any users running the Salt API.

    Product
    Salt
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline May 3, 2022)
    What to do
    Attackers are using this now. Install SaltStack’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • 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.
  • Nov 3, 2021SaltStack Salt Path Traversal VulnerabilityCVE-2020-11652 · Other software · SaltStack · reported by MITREExploitedMedium 6.5

    SaltStack Salt contains a path traversal vulnerability in the salt-master process ClearFuncs which allows directory access to authenticated users. Salt users who follow fundamental internet security guidelines and best practices are not affected by this vulnerability.

    Product
    Salt
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline May 3, 2022)
    What to do
    Attackers are using this now. Install SaltStack’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Nov 3, 2021SaltStack Salt Authentication Bypass VulnerabilityCVE-2020-11651 · Other software · SaltStack · reported by MITREExploitedCritical 9.8

    SaltStack Salt contains an authentication bypass vulnerability in the salt-master process ClearFuncs due to improperly validating method calls. The vulnerability allows a remote user to access some methods without authentication, which can be used to retrieve user tokens from the salt master and/or run commands on salt minions. Salt users who follow fundamental internet security guidelines and best practices are not affected by this vulnerability.

    Product
    Salt
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline May 3, 2022)
    What to do
    Attackers are using this now. Install SaltStack’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
  • Nov 3, 2021Tenda AC11 Router Stack Buffer Overflow VulnerabilityCVE-2021-31755 · Network & remote access · Tenda · reported by MITREExploitedCritical 9.8

    Tenda AC11 devices contain a stack buffer overflow vulnerability in /goform/setmac which allows attackers to execute code via a crafted post request.

    Product
    AC11 Router
    On CISA’s list since
    Nov 3, 2021 (federal fix deadline Nov 17, 2021)
    What to do
    Attackers are using this now. Install Tenda’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.

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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