NetScaler Gateway vulnerabilitiesAnd the versions its exploited flaws hit.
NetScaler Gateway is made by Citrix. We track 39 published vulnerabilities listed under that exact name, across 40 versions. 13 of them are on the list of flaws known to be exploited, the newest added on 4 October 2026. Citrix lists newer releases under their own names, such as Netscaler Gateway Firmware, so check those pages too.
The most recent NetScaler Gateway flaw added to the known-exploited list is CVE-2026-88779, on 4 October 2026. We keep watching the known-exploited list.
Is NetScaler Gateway listed under other names? Yes.
Citrix also lists NetScaler Gateway under more specific names, such as Netscaler Gateway Firmware and Netscaler Gateway 11.0. 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 Gateway do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "13.1 to before 13.1-64.28" means from 13.1 up to, but not including, 13.1-64.28. Find your version, then patch.
- CVE-2026-88779Exploited list, 4 Oct 2026
Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
13.1 to before 13.1-64.2814.1 to before 14.1-73.41 - CVE-2026-19490Exploited list, 9 Sep 2026
Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
13.1 to before 13.1-63.2114.1 to before 14.1-73.32 - CVE-2025-7775Exploited list, 26 Aug 2025
Citrix NetScaler Memory Overflow Vulnerability
13.1 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
13.1 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-2023-6548Exploited list, 17 Jan 2024
Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability
13.0 to before 13.0-92.2113.1 to before 13.1-51.1514.1 to before 14.1-12.35 - CVE-2023-6549Exploited list, 17 Jan 2024
Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability
13.0 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
13.0 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
13.0 to before 13.0-91.1313.1 to before 13.1-49.13
4 more exploited flaws name NetScaler Gateway without a version of its own, for example as the system other affected software runs on. They are in the list below.
Which NetScaler Gateway vulnerabilities are being exploited?
13 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.
- 8.7Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
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...
- 9.3Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
Citrix NetScaler ADC and NetScaler Gateway contain an authentication-bypass vulnerability involving an alternate path or channel.
- 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.
- 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.
- 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.
- 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...
Which NetScaler Gateway 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%
An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0.
- >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
- 88%
Improper access control in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 allows...
- 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
- 33%
Improper input validation in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 resulting...
- 33%
Vulnerability in NetScaler ADC and NetScaler Gateway.
- 26%
Improper access control in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 resulting in...
- 23%CVE-2020-8191Medium
Improper input validation in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 allows...
Running NetScaler Gateway? We'll keep checking.
Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.
- Tell us what you runPick your software from a list, or let us work it out from your website.
- We match it to every flawOver 400,000 published flaws, checked against your list.
- Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
- Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.
Free plan, no card needed. Nothing to install.
1 flaw being exploited affects software Acme tracks
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.
- Matched to
- NetScaler Gateway 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 39 published vulnerabilities listed under the name NetScaler Gateway, across 40 versions. The most recent NetScaler Gateway flaw added to the known-exploited list is CVE-2026-88779, on 4 October 2026.
13 are on the list of flaws known to be exploited. The most recently added are CVE-2026-88779, CVE-2026-19490 and CVE-2025-7775.
Citrix also lists NetScaler Gateway under more specific names, such as Netscaler Gateway Firmware and Netscaler Gateway 11.0. 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-2026-88779, affects 13.1 to before 13.1-64.28, 14.1 to before 14.1-73.41. The versions for every exploited flaw are listed on this page.
Create a EdgeProtect account and track NetScaler Gateway. 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.