NetScaler ADC vulnerabilitiesAnd the versions its exploited flaws hit.
NetScaler ADC is made by Citrix. We track 26 published vulnerabilities listed under that exact name, across 33 versions. 7 of them are on the list of flaws known to be exploited, the newest added on 26 August 2025. Citrix lists newer releases under their own names, such as Netscaler Application Delivery Controller Firmware, so check those pages too.
The most recent NetScaler ADC flaw added to the known-exploited list is CVE-2025-7775, on 26 August 2025. We keep watching the known-exploited list.
Is NetScaler ADC listed under other names? Yes.
Citrix also lists NetScaler ADC under more specific names, such as Netscaler Application Delivery Controller Firmware. Flaws listed only under those names are counted on their own pages, not here. If you run one of these, open its page for its own exploited flaws.
Which versions of NetScaler ADC do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "12.1 to before 12.1-55.330" means from 12.1 up to, but not including, 12.1-55.330. Find your version, then patch.
- CVE-2025-7775Exploited list, 26 Aug 2025
Citrix NetScaler Memory Overflow Vulnerability
12.1 to before 12.1-55.33013.1 to before 13.1-59.2214.1 to before 14.1-47.48 - CVE-2025-5777Exploited list, 10 Jul 2025
Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability
12.1 to before 12.1-55.32813.1 to before 13.1-58.3214.1 to before 14.1-43.56 - CVE-2025-6543Exploited list, 30 Jun 2025
Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability
13.1 to before 13.1-59.1914.1 to before 14.1-47.46 - CVE-2023-6549Exploited list, 17 Jan 2024
Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability
12.1 to before 12.1-55.30213.0 to before 13.0-92.2113.1 to before 13.1-51.1514.1 to before 14.1-12.35 - CVE-2023-6548Exploited list, 17 Jan 2024
Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability
12.1 to before 12.1-55.30213.0 to before 13.0-92.2113.1 to before 13.1-51.1514.1 to before 14.1-12.35 - CVE-2023-4966Exploited list, 18 Oct 2023
Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability
12.1 to before 12.1-55.30013.0 to before 13.0-92.1913.1 to before 13.1-49.1514.1 to before 14.1-8.50 - CVE-2023-3519Exploited list, 19 Jul 2023
Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability
12.1 to before 12.1-55.29713.0 to before 13.0-91.1313.1 to before 13.1-49.13
Which NetScaler ADC vulnerabilities are being exploited?
7 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 9.8Citrix NetScaler Memory Overflow Vulnerability
Citrix NetScaler ADC and NetScaler Gateway contain a memory overflow vulnerability that could allow for remote code execution and/or denial of service.
- 7.5Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability
Citrix NetScaler ADC and Gateway contain an out-of-bounds read vulnerability due to insufficient input validation.
- 9.8Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability
Citrix NetScaler ADC and Gateway contain a buffer overflow vulnerability leading to unintended control flow and Denial of Service.
- 8.2Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability
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.
- 5.5Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability
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.
- 9.4Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability
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...
- 9.8Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability
Citrix NetScaler ADC and NetScaler Gateway contains a code injection vulnerability that allows for unauthenticated remote code execution.
Which NetScaler ADC flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- >99%
Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server.
- >99%
Insufficient input validation leading to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
- >99%
Unauthenticated remote code execution
- 58%
Improper Restriction of Operations within the Bounds of a Memory Buffer in NetScaler ADC and NetScaler Gateway allows Unauthenticated Denial of Service and Out-Of-Bounds Memory Read
- 19%
Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy)...
- 9.8%
Memory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and NetScaler Gateway when configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual...
- 4.6%CVE-2018-6810High
Directory traversal vulnerability in NetScaler ADC 10.5, 11.0, 11.1, and 12.0, and NetScaler Gateway 10.5, 11.0, 11.1, and 12.0 allows remote attackers to traverse the directory on the target system via a crafted...
- 4.4%CVE-2018-6809Critical
NetScaler ADC 10.5, 11.0, 11.1, and 12.0, and NetScaler Gateway 10.5, 11.0, 11.1, and 12.0 allow remote attackers to gain privilege on a target system.
- 3.7%CVE-2025-5349High
Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler Gateway
- 3.4%CVE-2016-2071Critical
Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway 11.x before 11.0 Build 64.34, 10.5 before 10.5 Build 59.13, and 10.5.e before Build 59.1305.e allows remote attackers to gain privileges...
Running NetScaler ADC? We'll keep checking.
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1 flaw being exploited affects software Acme tracks
Citrix NetScaler ADC and NetScaler Gateway contain a memory overflow vulnerability that could allow for remote code execution and/or denial of service.
- Matched to
- NetScaler ADC on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 26 published vulnerabilities listed under the name NetScaler ADC, across 33 versions. The most recent NetScaler ADC flaw added to the known-exploited list is CVE-2025-7775, on 26 August 2025.
7 are on the list of flaws known to be exploited. The most recently added are CVE-2025-7775, CVE-2025-5777 and CVE-2025-6543.
Citrix also lists NetScaler ADC under more specific names, such as Netscaler Application Delivery Controller Firmware. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list.
Each flaw names its own versions, usually as ranges. The newest, CVE-2025-7775, affects 12.1 to before 12.1-55.330, 13.1 to before 13.1-59.22, 14.1 to before 14.1-47.48. The versions for every exploited flaw are listed on this page.
Create a EdgeProtect account and track NetScaler ADC. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.