CVE-2026-3055 Details.
Citrix NetScaler SAML IDP - Memory Overread
Atlas does not check this one. Needs requests that change data.
To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check.
About CVE-2026-3055. What It Means.
NetScaler ADC and NetScaler Gateway contain an insufficient input validation vulnerability when configured as a SAML IDP, leading to memory overread, letting attackers potentially access sensitive memory, exploit requires configuration as SAML IDP
Affected Product. What Is Hit.
The record for CVE-2026-3055 does not name a vendor or product yet.
References. Where To Read More.
- https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696300
- https://labs.watchtowr.com/the-sequels-are-never-as-good-but-were-still-in-pain-citrix-netscaler-cve-2026-3055-memory-overread/
- https://labs.watchtowr.com/please-we-beg-just-one-weekend-free-of-appliances-citrix-netscaler-cve-2026-3055-memory-overread-part-2/
FAQ
Common Questions.
Citrix NetScaler SAML IDP - Memory Overread. NetScaler ADC and NetScaler Gateway contain an insufficient input validation vulnerability when configured as a SAML IDP, leading to memory overread, letting attackers potentially access sensitive memory, exploit requires configuration as SAML IDP
No. To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check. The facts about CVE-2026-3055 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
Yes. CVE-2026-3055 is on the CISA Known Exploited Vulnerabilities list, which means attackers have used it against real targets.
Update the affected software to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-3055. Atlas does not run a check for it, so nothing here says whether a particular site is affected.