CVE-2025-12101 Cross-Site Scripting (XSS)
Attackers can execute scripts in NetScaler Gateway or AAA virtual server configurations, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-12101?
CVE-2025-12101 is a medium-severity cross-site scripting vulnerability in NetScaler ADC, published on 11 Nov 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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
Weakness: CWE-79
Which versions are affected by CVE-2025-12101?
How do I fix CVE-2025-12101?
No fix has been published for CVE-2025-12101 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-12101 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-12101 exists.
Public exploit code: 1 Nuclei template and 2 proofs of concept on GitHub.
Sources
Also known as GHSA-jcjw-279r-m433.