Citrix Patches Six NetScaler Flaws Allowing File Read and Denial-of-Service

Citrix has released security updates to fix multiple vulnerabilities in NetScaler ADC and NetScaler Gateway. These flaws could be exploited by an attacker to read arbitrary files or cause a denial-of-service condition. One of the vulnerabilities, identified as CVE-2026-8451, is due to insufficient input validation and has a CVSS score of 8.8. This vulnerability is one of six that Citrix has patched in its latest security updates. The patches address issues in both NetScaler ADC and NetScaler Gateway products. The vulnerabilities could be used by an attacker to gain unauthorized access to files or disrupt service.