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.

1,762exploited flaws on CISA’s list

34added in the last 30 days

343new WordPress flaws this week

390,080entries in the database

124 results · page 1 of 3

Oct 8, 2026Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC.CVE-2026-107406 · Other software · NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5Critical 9.5
Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC. NetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific requirements: * For the following versions: Applicable only when configured as a SAML IdP: * NetScaler ADC and NetScaler Gateway between 14.1-73.37 and 14.1-73.41, inclusive * NetScaler ADC 14.1-FIPS between 14.1-73.37 FIPS and 14.1-73.41 FIPS, inclusive * NetScaler ADC and NetScaler Gateway between 13.1-64.23 and 13.1-64.28, inclusive * NetScaler ADC 13.1-FIPS between 13.1-NDcPP 13.1-37.279 and 13.1- 37.282, inclusive For the following versions: Applicable only when configured as a SAML SP or SAML IdP: * NetScaler ADC and NetScaler Gateway before 14.1-73.37 * NetScaler ADC 14.1-FIPS before 14.1-73.37 FIPS * NetScaler ADC and NetScaler Gateway before 13.1-64.23 * NetScaler ADC 13.1-FIPS before13.1-NDcPP 13.1-37.279
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com community.citrix.com
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, 2026Predictable exact value from previous values vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.CVE-2026-88778 · Network & remote access · Citrix NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5High 8.8
Predictable exact value from previous values vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23.
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Sep 27, 2026Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.CVE-2026-88777 · Network & remote access · Citrix NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5High 8.8
Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to unpredictable or erroneous behavior or Denial of Service
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Sep 27, 2026Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.CVE-2026-88776 · Network & remote access · Citrix NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5High 8.8
Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to unpredictable or erroneous behavior or Denial of Service
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Sep 27, 2026Memory overflow vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.CVE-2026-88775 · Network & remote access · Citrix NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5High 8.8
Memory overflow vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Sep 27, 2026Vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.CVE-2026-88774 · Network & remote access · Citrix NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5High 7
Vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to a feature policy bypass due to improper HTTP URL based expression usage.
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Sep 27, 2026Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.CVE-2026-88773 · Network & remote access · Citrix NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5Critical 9.3
Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1-37.279 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.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
Aug 19, 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 19, 2026Vulnerability in NetScaler ADC and NetScaler Gateway.CVE-2026-19489 · Other software · NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5High 8.8
Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Jun 30, 2026Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if NetScaleCVE-2026-8655 · Other software · NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5High 8.8
Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if NetScaler ADC is configured as an LB of type Oracle OR NetScaler ADC is configured as a DNS Proxy OR NetScaler ADC is configured as a DNS recursive resolver deployment
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Jun 30, 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
Jun 30, 2026Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDCVE-2026-8451 · Other software · NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5High 8.8
Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Jun 30, 2026Denial of service via malformed HTTP/2 requests in NetScaler ADC and NetScaler Gateway if HTTP/2 is enabled in HTTP Profile and associated with the virtual servCVE-2026-13474 · Other software · NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5High 8.7
Denial of service via malformed HTTP/2 requests in NetScaler ADC and NetScaler Gateway if HTTP/2 is enabled in HTTP Profile and associated with the virtual server (of type LB, CS, VPN) or the service configured on NetScaler
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Jun 30, 2026Insufficient input validation leading to memory overread in NetScaler ADC and NetScaler Gateway if the TCP TimeStamp is enabled in TCP Profile and is associatedCVE-2026-10817 · Other software · NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5Medium 6.9
Insufficient input validation leading to memory overread in NetScaler ADC and NetScaler Gateway if the TCP TimeStamp is enabled in TCP Profile and is associated with the virtual server (of type LB, CS, VPN) or the service configured on NetScaler
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Jun 30, 2026Arbitrary File Read (Unauthenticated) in NetScaler ADC and NetScaler Gateway if the access to NSIP, Cluster Management IP or SNIP with management access is enabCVE-2026-10816 · Other software · NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5High 7.1
Arbitrary File Read (Unauthenticated) in NetScaler ADC and NetScaler Gateway if the access to NSIP, Cluster Management IP or SNIP with management access is enabled
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Mar 23, 2026Race Condition in NetScaler ADC and NetScaler Gateway when appliance is configured as Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server leadinCVE-2026-4368 · Other software · NetScaler · reported by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5High 7.7
Race Condition in NetScaler ADC and NetScaler Gateway when appliance is configured as Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server leading to User Session Mixup
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Mar 23, 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
Nov 11, 2025Cross-Site Scripting (XSS) in NetScaler ADC and NetScaler Gateway when the appliance is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy)CVE-2025-12101 · Other software · NetScaler · reported by secure@citrix.comMedium 5.9
Cross-Site Scripting (XSS) in NetScaler ADC and NetScaler Gateway when the appliance is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Aug 26, 2025Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler Gateway when an attacker can get access to the appliance NSIP, ClusCVE-2025-8424 · Other software · NetScaler · reported by secure@citrix.comHigh 8.7
Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler Gateway when an attacker can get access to the appliance NSIP, Cluster Management IP or local GSLB Site IP or SNIP with Management Access
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Aug 26, 2025Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is confCVE-2025-7776 · Other software · NetScaler · reported by secure@citrix.comHigh 8.8
Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) with PCoIP Profile bounded to it
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.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
Jun 25, 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
Jun 17, 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 17, 2025Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler GatewayCVE-2025-5349 · Other software · NetScaler · reported by secure@citrix.comHigh 8.7
Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler Gateway
Product
ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Jun 17, 2025Arbitrary file read in NetScaler Console and NetScaler SDX (SVM)CVE-2025-4365 · Other software · NetScaler · reported by secure@citrix.comMedium 6.9
Arbitrary file read in NetScaler Console and NetScaler SDX (SVM)
Product
Console
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Feb 19, 2025Authenticated privilege escalation in NetScaler Console and NetScaler Agent allows.CVE-2024-12284 · Other software · NetScaler · reported by secure@citrix.comHigh 8.8
Authenticated privilege escalation in NetScaler Console and NetScaler Agent allows.
Product
Console
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Nov 12, 2024Authenticated user can access unintended user capabilities in NetScaler ADC and NetScaler Gateway if the appliance must be configured as a Gateway (SSL VPN, ICACVE-2024-8535 · Other software · NetScaler · reported by secure@citrix.comMedium 5.8
Authenticated user can access unintended user capabilities in NetScaler ADC and NetScaler Gateway if the appliance must be configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) with KCDAccount configuration for Kerberos SSO to access backend resources OR the appliance must be configured as an Auth Server (AAA Vserver) with KCDAccount configuration for Kerberos SSO to access backend resources
Product
NetScaler ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Nov 12, 2024Memory safety vulnerability leading to memory corruption and Denial of Service in NetScaler ADC and Gateway if the appliance must be configured as a Gateway (VPCVE-2024-8534 · Other software · NetSclaer · reported by secure@citrix.comHigh 8.4
Memory safety vulnerability leading to memory corruption and Denial of Service in NetScaler ADC and Gateway if the appliance must be configured as a Gateway (VPN Vserver) with RDP Feature enabled OR the appliance must be configured as a Gateway (VPN Vserver) and RDP Proxy Server Profile is created and set to Gateway (VPN Vserver) OR the appliance must be configured as a Auth Server (AAA Vserver) with RDP Feature enabled
Product
NetScaler ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com
Jul 10, 2024Denial of Service in NetScaler Console (formerly NetScaler ADM), NetScaler Agent, and NetScaler SDXCVE-2024-6236 · Other software · NetSclaer · reported by secure@citrix.comHigh 7.1
Denial of Service in NetScaler Console (formerly NetScaler ADM), NetScaler Agent, and NetScaler SDX
Product
NetScaler Console
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.com
Jul 10, 2024Sensitive information disclosure in NetScaler ConsoleCVE-2024-6235 · Other software · NetScaler · reported by secure@citrix.comCritical 9.4
Sensitive information disclosure in NetScaler Console
Product
NetScaler Console
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.com
Jul 10, 2024Open redirect vulnerability allows a remote unauthenticated attacker to redirect users to arbitrary websites in NetScaler ADC and NetScaler GatewayCVE-2024-5492 · Other software · NetSclaer · reported by secure@citrix.comMedium 5.1
Open redirect vulnerability allows a remote unauthenticated attacker to redirect users to arbitrary websites in NetScaler ADC and NetScaler Gateway
Product
NetScaler ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.com
Jul 10, 2024Denial of Service in NetScaler ADC and NetScaler Gateway in NetScalerCVE-2024-5491 · Other software · NetScaler · reported by secure@citrix.comHigh 7.2
Denial of Service in NetScaler ADC and NetScaler Gateway in NetScaler
Product
NetScaler ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.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 27, 2023Denial of Service in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA Virtual ServerCVE-2023-4967 · Other software · Cloud Software Group · reported by secure@citrix.comHigh 8.2
Denial of Service in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA Virtual Server
Product
NetScaler ADC
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.com
Oct 10, 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
Jul 19, 2023Privilege Escalation to root administrator (nsroot) CVE-2023-3467 · Network & remote access · Citrix · reported by secure@citrix.comHigh 8
Privilege Escalation to root administrator (nsroot)
Product
NetScaler ADC 
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.com
Jul 19, 2023Reflected Cross-Site Scripting (XSS) CVE-2023-3466 · Network & remote access · Citrix · reported by secure@citrix.comHigh 8.3
Reflected Cross-Site Scripting (XSS)
Product
NetScaler ADC 
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record 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
May 26, 2023NetScaler file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture fileCVE-2023-2858 · Other software · Wireshark Foundation · reported by cve@gitlab.comMedium 5.3
NetScaler file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture file
Product
Wireshark
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record gitlab.com gitlab.com
Aug 5, 2021A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway), and Citrix SD-WAN CVE-2021-22920 · Network & remote access · Citrix · reported by support@hackerone.comMedium 6.5
A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway), and Citrix SD-WAN WANOP Edition models 4000-WO, 4100-WO, 5000-WO, and 5100-WO. These vulnerabilities, if exploited, could lead to a phishing attack through a SAML authentication hijack to steal a valid user session.
Product
Application Delivery Management
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.com
Aug 5, 2021A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway), and Citrix SD-WAN CVE-2021-22919 · Network & remote access · Citrix · reported by support@hackerone.comHigh 7.5
A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway), and Citrix SD-WAN WANOP Edition models 4000-WO, 4100-WO, 5000-WO, and 5100-WO. These vulnerabilities, if exploited, could lead to the limited available disk space on the appliances being fully consumed.
Product
Application Delivery Controller Firmware
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.com
Jun 16, 2021Citrix ADC and Citrix/NetScaler Gateway before 13.0-82.41, 12.1-62.23, 11.1-65.20 and Citrix ADC 12.1-FIPS before 12.1-55.238 suffer from improper access controCVE-2020-8300 · Network & remote access · Citrix · reported by support@hackerone.comMedium 6.5
Citrix ADC and Citrix/NetScaler Gateway before 13.0-82.41, 12.1-62.23, 11.1-65.20 and Citrix ADC 12.1-FIPS before 12.1-55.238 suffer from improper access control allowing SAML authentication hijack through a phishing attack to steal a valid user session. Note that Citrix ADC or Citrix Gateway must be configured as a SAML SP or a SAML IdP for this to be possible.
Product
Gateway
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.com
Jun 16, 2021Citrix ADC and Citrix/NetScaler Gateway 13.0 before 13.0-76.29, 12.1-61.18, 11.1-65.20, Citrix ADC 12.1-FIPS before 12.1-55.238, and Citrix SD-WAN WANOP EditionCVE-2020-8299 · Network & remote access · Citrix · reported by support@hackerone.comMedium 6.5
Citrix ADC and Citrix/NetScaler Gateway 13.0 before 13.0-76.29, 12.1-61.18, 11.1-65.20, Citrix ADC 12.1-FIPS before 12.1-55.238, and Citrix SD-WAN WANOP Edition before 11.4.0, 11.3.2, 11.3.1a, 11.2.3a, 11.1.2c, 10.2.9a suffers from uncontrolled resource consumption by way of a network-based denial-of-service from within the same Layer 2 network segment. Note that the attacker must be in the same Layer 2 network segment as the vulnerable appliance.
Product
Gateway
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.com
Sep 18, 2020Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ACVE-2020-8247 · Network & remote access · Citrix · reported by support@hackerone.comHigh 8.8
Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ADC and NetScaler Gateway 12.0, Citrix ADC and NetScaler Gateway 11.1 before 11.1-65.12, Citrix SD-WAN WANOP 11.2 before 11.2.1a, Citrix SD-WAN WANOP 11.1 before 11.1.2a, Citrix SD-WAN WANOP 11.0 before 11.0.3f, Citrix SD-WAN WANOP 10.2 before 10.2.7b are vulnerable to escalation of privileges on the management interface.
Product
Application Delivery Controller Firmware
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.com
Sep 18, 2020Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ACVE-2020-8246 · Network & remote access · Citrix · reported by support@hackerone.comHigh 7.5
Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ADC and NetScaler Gateway 12.0, Citrix ADC and NetScaler Gateway 11.1 before 11.1-65.12, Citrix SD-WAN WANOP 11.2 before 11.2.1a, Citrix SD-WAN WANOP 11.1 before 11.1.2a, Citrix SD-WAN WANOP 11.0 before 11.0.3f, Citrix SD-WAN WANOP 10.2 before 10.2.7b are vulnerable to a denial of service attack originating from the management network.
Product
Application Delivery Controller Firmware
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.citrix.com support.citrix.com
Sep 18, 2020Improper Input Validation on Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPSCVE-2020-8245 · Network & remote access · Citrix · reported by support@hackerone.comMedium 6.1
Improper Input Validation on Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ADC and NetScaler Gateway 12.0, Citrix ADC and NetScaler Gateway 11.1 before 11.1-65.12, Citrix SD-WAN WANOP 11.2 before 11.2.1a, Citrix SD-WAN WANOP 11.1 before 11.1.2a, Citrix SD-WAN WANOP 11.0 before 11.0.3f, Citrix SD-WAN WANOP 10.2 before 10.2.7b leads to an HTML Injection attack against the SSL VPN web portal.
Product
Application Delivery Controller Firmware
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record 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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