Updated 4 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.

1,764exploited flaws on CISA’s list

35added in the last 30 days

479new WordPress flaws this week

390,525entries in the database

30 results

Oct 4, 2026Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer VulnerabilityCVE-2026-88779 · Network & remote access · Citrix · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5ExploitedHigh 8.7
Citrix NetScaler ADC (formerly Citrix ADC) and Citrix NetScaler Gateway (formerly Citrix Gateway) contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow for a denial of service.
Product
NetScaler
On CISA’s list since
Oct 4, 2026 (federal fix deadline Oct 7, 2026)
What to do
Attackers are using this now. Install Citrix’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.citrix.com community.citrix.com
Sep 27, 2026Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer VulnerabilityCVE-2026-88772 · Network & remote access · Citrix · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5ExploitedCritical 9.5
Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow for remote code execution or denial of service
Product
NetScaler
On CISA’s list since
Sep 27, 2026 (federal fix deadline Sep 30, 2026)
What to do
Attackers are using this now. Install Citrix’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.citrix.com cisa.gov
Sep 27, 2026Citrix NetScaler Improper Input Validation VulnerabilityCVE-2026-88771 · Network & remote access · Citrix · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5ExploitedCritical 9.5
Citrix NetScaler ADC and NetScaler Gateway contain an improper input validation vulnerability that could allow an unauthenticated attacker to execute arbitrary commands.
Product
NetScaler
On CISA’s list since
Sep 27, 2026 (federal fix deadline Sep 30, 2026)
What to do
Attackers are using this now. Install Citrix’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.citrix.com cisa.gov
Sep 9, 2026Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel VulnerabilityCVE-2026-19490 · Network & remote access · Citrix · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5ExploitedCritical 9.3
Citrix NetScaler ADC and NetScaler Gateway contain an authentication-bypass vulnerability involving an alternate path or channel. When the NetScaler appliance is configured as an AAA virtual server or as a Gateway (SSL VPN, ICA Proxy, CVPN, or RDP Proxy), an unauthenticated remote threat actor may be able to bypass authentication.
Product
NetScaler
On CISA’s list since
Sep 9, 2026 (federal fix deadline Sep 12, 2026)
What to do
Attackers are using this now. Install Citrix’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.citrix.com cisa.gov
Aug 26, 2026Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer VulnerabilityCVE-2026-8452 · Network & remote access · Citrix · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5ExploitedHigh 8.8
Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a memory buffer vulnerability which could lead to denial of service.
Product
NetScaler ADC and NetScaler Gateway
On CISA’s list since
Aug 26, 2026 (federal fix deadline Aug 29, 2026)
What to do
Attackers are using this now. Install Citrix’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.citrix.com cisa.gov
Mar 30, 2026Citrix NetScaler Out-of-Bounds Read VulnerabilityCVE-2026-3055 · Network & remote access · Citrix · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5ExploitedCritical 9.3
Citrix NetScaler ADC (formerly Citrix ADC), NetScaler Gateway (formerly Citrix Gateway) and NetScaler ADC FIPS and NDcPP contain an out-of-bounds reads vulnerability when configured as a SAML IDP leading to memory overread.
Product
NetScaler
On CISA’s list since
Mar 30, 2026 (federal fix deadline Apr 2, 2026)
What to do
Attackers are using this now. Install Citrix’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.citrix.com labs.watchtowr.com
Aug 26, 2025Citrix NetScaler Memory Overflow VulnerabilityCVE-2025-7775 · Network & remote access · Citrix · reported by secure@citrix.comExploitedCritical 9.2
Citrix NetScaler ADC and NetScaler Gateway contain a memory overflow vulnerability that could allow for remote code execution and/or denial of service.
Product
NetScaler
On CISA’s list since
Aug 26, 2025 (federal fix deadline Aug 28, 2025)
What to do
Attackers are using this now. Install Citrix’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.citrix.com cisa.gov
Aug 25, 2025Citrix Session Recording Deserialization of Untrusted Data VulnerabilityCVE-2024-8069 · Network & remote access · Citrix · reported by secure@citrix.comExploitedMedium 5.1
Citrix Session Recording contains a deserialization of untrusted data vulnerability that allows limited remote code execution with privilege of a NetworkService Account access. Attacker must be an authenticated user on the same intranet as the session recording server.
Product
Session Recording
On CISA’s list since
Aug 25, 2025 (federal fix deadline Sep 15, 2025)
What to do
Attackers are using this now. Install Citrix’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.citrix.com cisa.gov
Aug 25, 2025Citrix Session Recording Improper Privilege Management VulnerabilityCVE-2024-8068 · Network & remote access · Citrix · reported by secure@citrix.comExploitedMedium 5.1
Citrix Session Recording contains an improper privilege management vulnerability that could allow for privilege escalation to NetworkService Account access. An attacker must be an authenticated user in the same Windows Active Directory domain as the session recording server domain.
Product
Session Recording
On CISA’s list since
Aug 25, 2025 (federal fix deadline Sep 15, 2025)
What to do
Attackers are using this now. Install Citrix’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.citrix.com cisa.gov
Jul 10, 2025Citrix NetScaler ADC and Gateway Out-of-Bounds Read VulnerabilityCVE-2025-5777 · Network & remote access · Citrix · reported by secure@citrix.comExploitedRansomwareCritical 9.3
Citrix NetScaler ADC and Gateway contain an out-of-bounds read vulnerability due to insufficient input validation. This vulnerability can lead to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server.
Product
NetScaler ADC and Gateway
On CISA’s list since
Jul 10, 2025 (federal fix deadline Jul 11, 2025)
What to do
Attackers are using this now. Install Citrix’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 support.citrix.com citrixbleed.com
Jun 30, 2025Citrix NetScaler ADC and Gateway Buffer Overflow VulnerabilityCVE-2025-6543 · Network & remote access · Citrix · reported by secure@citrix.comExploitedCritical 9.2
Citrix NetScaler ADC and Gateway contain a buffer overflow vulnerability leading to unintended control flow and Denial of Service. NetScaler must be configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server.
Product
NetScaler ADC and Gateway
On CISA’s list since
Jun 30, 2025 (federal fix deadline Jul 21, 2025)
What to do
Attackers are using this now. Install Citrix’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.citrix.com cisa.gov
Jan 16, 2025Aviatrix Controllers OS Command Injection VulnerabilityCVE-2024-50603 · Other software · Aviatrix · reported by MITREExploitedCritical 10
Aviatrix Controllers contain an OS command injection vulnerability that could allow an unauthenticated attacker to execute arbitrary code. Shell metacharacters can be sent to /v1/api in cloud_type for list_flightpath_destination_instances, or src_cloud_type for flightpath_connection_test.
Product
Controllers
On CISA’s list since
Jan 16, 2025 (federal fix deadline Feb 6, 2025)
What to do
Attackers are using this now. Install Aviatrix’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 docs.aviatrix.com docs.aviatrix.com
Jan 17, 2024Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow VulnerabilityCVE-2023-6549 · Network & remote access · Citrix · reported by secure@citrix.comExploitedHigh 8.2
Citrix NetScaler ADC and NetScaler Gateway contain a buffer overflow vulnerability that allows for a denial-of-service when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server.
Product
NetScaler ADC and NetScaler Gateway
On CISA’s list since
Jan 17, 2024 (federal fix deadline Feb 7, 2024)
What to do
Attackers are using this now. Install Citrix’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.citrix.com support.citrix.com
Jan 17, 2024Citrix NetScaler ADC and NetScaler Gateway Code Injection VulnerabilityCVE-2023-6548 · Network & remote access · Citrix · reported by secure@citrix.comExploitedMedium 5.5
Citrix NetScaler ADC and NetScaler Gateway contain a code injection vulnerability that allows for authenticated remote code execution on the management interface with access to NSIP, CLIP, or SNIP.
Product
NetScaler ADC and NetScaler Gateway
On CISA’s list since
Jan 17, 2024 (federal fix deadline Jan 24, 2024)
What to do
Attackers are using this now. Install Citrix’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.citrix.com support.citrix.com
Oct 18, 2023Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow VulnerabilityCVE-2023-4966 · Network & remote access · Citrix · reported by secure@citrix.comExploitedRansomwareCritical 9.4
Citrix NetScaler ADC and NetScaler Gateway contain a buffer overflow vulnerability that allows for sensitive information disclosure when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server.
Product
NetScaler ADC and NetScaler Gateway
On CISA’s list since
Oct 18, 2023 (federal fix deadline Nov 8, 2023)
What to do
Attackers are using this now. Install Citrix’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 support.citrix.com
Aug 16, 2023Citrix Content Collaboration ShareFile Improper Access Control VulnerabilityCVE-2023-24489 · Network & remote access · Citrix · reported by secure@citrix.comExploitedCritical 9.8
Citrix Content Collaboration contains an improper access control vulnerability that could allow an unauthenticated attacker to remotely compromise customer-managed ShareFile storage zones controllers.
Product
Content Collaboration
On CISA’s list since
Aug 16, 2023 (federal fix deadline Sep 6, 2023)
What to do
Attackers are using this now. Install Citrix’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.citrix.com support.citrix.com
Jul 19, 2023Citrix NetScaler ADC and NetScaler Gateway Code Injection VulnerabilityCVE-2023-3519 · Network & remote access · Citrix · reported by secure@citrix.comExploitedRansomwareCritical 9.8
Citrix NetScaler ADC and NetScaler Gateway contains a code injection vulnerability that allows for unauthenticated remote code execution.
Product
NetScaler ADC and NetScaler Gateway
On CISA’s list since
Jul 19, 2023 (federal fix deadline Aug 9, 2023)
What to do
Attackers are using this now. Install Citrix’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 support.citrix.com
Dec 13, 2022Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass VulnerabilityCVE-2022-27518 · Network & remote access · Citrix · reported by secure@citrix.comExploitedCritical 9.8
Citrix Application Delivery Controller (ADC) and Gateway, when configured with SAML SP or IdP configuration, contain an authentication bypass vulnerability that allows an attacker to execute code as administrator.
Product
Application Delivery Controller (ADC) and Gateway
On CISA’s list since
Dec 13, 2022 (federal fix deadline Jan 3, 2023)
What to do
Attackers are using this now. Install Citrix’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.citrix.com support.citrix.com
Mar 25, 2022Citrix Multiple Products Remote Code Execution VulnerabilityCVE-2017-6316 · Network & remote access · Citrix · reported by MITREExploitedCritical 9.8
A vulnerability has been identified in the management interface of Citrix NetScaler SD-WAN Enterprise and Standard Edition and Citrix CloudBridge Virtual WAN Edition that could result in an unauthenticated, remote attacker being able to execute arbitrary code as a root user. This vulnerability also affects XenMobile Server.
Product
NetScaler SD-WAN Enterprise, CloudBridge Virtual WAN, and XenMobile Server
On CISA’s list since
Mar 25, 2022 (federal fix deadline Apr 15, 2022)
What to do
Attackers are using this now. Install Citrix’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
Mar 25, 2022Citrix ShareFile Improper Access Control VulnerabilityCVE-2021-22941 · Network & remote access · Citrix · reported by support@hackerone.comExploitedRansomwareCritical 9.8
Improper Access Control in Citrix ShareFile storage zones controller may allow an unauthenticated attacker to remotely compromise the storage zones controller.
Product
ShareFile
On CISA’s list since
Mar 25, 2022 (federal fix deadline Apr 15, 2022)
What to do
Attackers are using this now. Install Citrix’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 support.citrix.com support.citrix.com
Mar 25, 2022Citrix SD-WAN and NetScaler Command Injection VulnerabilityCVE-2019-12991 · Network & remote access · Citrix · reported by MITREExploitedHigh 8.8
Authenticated Command Injection in Citrix SD-WAN Appliance and NetScaler SD-WAN Appliance.
Product
SD-WAN and NetScaler
On CISA’s list since
Mar 25, 2022 (federal fix deadline Apr 15, 2022)
What to do
Attackers are using this now. Install Citrix’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 securityfocus.com
Mar 25, 2022Citrix SD-WAN and NetScaler SQL Injection VulnerabilityCVE-2019-12989 · Network & remote access · Citrix · reported by MITREExploitedCritical 9.8
Citrix SD-WAN and NetScaler SD-WAN allow SQL Injection.
Product
SD-WAN and NetScaler
On CISA’s list since
Mar 25, 2022 (federal fix deadline Apr 15, 2022)
What to do
Attackers are using this now. Install Citrix’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 securityfocus.com
Mar 25, 2022Jenkins Matrix Project Plugin Remote Code Execution VulnerabilityCVE-2019-1003030 · Websites & servers · Jenkins · reported by jenkinsci-cert@googlegroups.comExploitedCritical 9.9
Jenkins Matrix Project plugin contains a vulnerability which can allow users to escape the sandbox, opening opportunity to perform remote code execution.
Product
Matrix Project Plugin
On CISA’s list since
Mar 25, 2022 (federal fix deadline Apr 15, 2022)
What to do
Attackers are using this now. Install Jenkins’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 securityfocus.com
Jan 18, 2022Aviatrix Controller Unrestricted Upload of FileCVE-2021-40870 · Other software · Aviatrix · reported by MITREExploitedCritical 9.8
Unrestricted upload of a file with a dangerous type is possible, which allows an unauthenticated user to execute arbitrary code via directory traversal.
Product
Aviatrix Controller
On CISA’s list since
Jan 18, 2022 (federal fix deadline Feb 1, 2022)
What to do
Attackers are using this now. Install Aviatrix’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 docs.aviatrix.com
Nov 3, 2021Citrix StoreFront Server XML External Entity (XXE) Processing VulnerabilityCVE-2019-13608 · Network & remote access · Citrix · reported by MITREExploitedRansomwareHigh 7.5
Citrix StoreFront Server contains an XML External Entity (XXE) processing vulnerability that may allow an unauthenticated attacker to retrieve potentially sensitive information.
Product
StoreFront Server
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Citrix’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 support.citrix.com support.citrix.com
Nov 3, 2021Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass VulnerabilityCVE-2020-8193 · Network & remote access · Citrix · reported by support@hackerone.comExploitedMedium 6.5
Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an authorization bypass vulnerability that may allow unauthenticated access to certain URL endpoints. The attacker must have access to the NetScaler IP (NSIP) in order to perform exploitation.
Product
Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Citrix’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 support.citrix.com
Nov 3, 2021Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure VulnerabilityCVE-2020-8195 · Network & remote access · Citrix · reported by support@hackerone.comExploitedMedium 6.5
Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an information disclosure vulnerability.
Product
Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Citrix’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 support.citrix.com
Nov 3, 2021Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure VulnerabilityCVE-2020-8196 · Network & remote access · Citrix · reported by support@hackerone.comExploitedMedium 4.3
Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an information disclosure vulnerability.
Product
Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Citrix’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 support.citrix.com
Nov 3, 2021Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution VulnerabilityCVE-2019-19781 · Network & remote access · Citrix · reported by MITREExploitedRansomwareCritical 9.8
Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an unspecified vulnerability that could allow an unauthenticated attacker to perform code execution.
Product
Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Citrix’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 packetstormsecurity.com
Nov 3, 2021Citrix Workspace Application and Receiver for Windows Remote Code Execution VulnerabilityCVE-2019-11634 · Network & remote access · Citrix · reported by MITREExploitedRansomwareCritical 9.8
Citrix Workspace Application and Receiver for Windows contains remote code execution vulnerability resulting from local drive access preferences not being enforced into the clients' local drives.
Product
Workspace Application and Receiver for Windows
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Citrix’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 support.citrix.com support.citrix.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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