Citrix Releases Critical Security Patch for NetScaler Vulnerability
The company has issued an urgent patch to address active exploitation of the SAML authentication flaw.
Citrix has officially confirmed a new, critical vulnerability affecting its NetScaler products. The flaw, tracked as CVE-2026-88779, is already being actively exploited in cyberattacks. The vulnerability impacts the Security Assertion Markup Language (SAML) authentication process, potentially allowing attackers to paralyze system operations.## Risks and RecommendationsExperts are currently investigating whether this flaw could be used not only for Denial-of-Service (DoS) attacks but also for Remote Code Execution (RCE). The latter scenario is particularly dangerous, as it would grant hackers full control over the affected system.Citrix has urged all clients to install the necessary security patches immediately. The company emphasizes that NetScaler administrators must apply these updates as quickly as possible to protect their infrastructure from potential breaches. While attacks have already been recorded, detailed information regarding the scale of the damage to affected organizations has not yet been disclosed.For companies using Citrix solutions, it is strongly recommended to conduct a security audit and update systems immediately. Critical vulnerabilities of this nature frequently target both the public and private sectors, making caution and timely responses essential to ensuring data security.