The Sequels Are Never As Good, But We're Still In Pain (Citrix NetScaler CVE-2026-3055 Memory Overread)
Vulnerability: A new memory overread vulnerability, CVE-2026-3055, has been identified in Citrix NetScaler appliances, echoing the notorious CitrixBleed flaws.
Deep Analysis and Expert Commentary
A new memory overread vulnerability, CVE-2026-3055, has been identified in Citrix NetScaler appliances, echoing the notorious CitrixBleed flaws. This flaw allows for the disclosure of sensitive memory contents, potentially enabling session hijacking, though the leaked data volume appears limited and exploitation can be unreliable in low-traffic environments. The vulnerability resides in SAML proce
Original Article Brief Intro
watchTowr Labs · 2026-03-28 · Vulnerability: A new memory overread vulnerability, CVE-2026-3055, has been identified in Citrix NetScaler appliances, echoing the notorious CitrixBleed flaws.
Related Terms and Notes
CVE IDs
- CitrixBleed — The colloquial name for a series of critical memory disclosure vulnerabilities (CVE-2023-4966 and others) in Citrix NetScaler.
- CVE-2026-3055 — A memory overread vulnerability in Citrix NetScaler appliances related to SAML request processing.
Context Notes
- CitrixBleed
- Memory Overread — A software flaw where a program reads data beyond the boundaries of an allocated buffer, potentially exposing sensitive information.
- SAML — Security Assertion Markup Language, an XML-based standard for exchanging authentication and authorization data between parties.
- SAML Processing
- Session Hijacking
- Vulnerability Disclosure