Warning: CVE-2026-88779 affects NetScaler ADC and NetScaler Gateway, allowing remote attackers to cause denial of service. Patch Immediately!

Citrix NetScaler ADC and NetScaler Gateway contain a high-severity SAML processing memory overflow (CVE-2026-88779, CVSS v4.0 8.7) impacting multiple 13.1 and 14.1 builds; the flaw can be remotely exploited without authentication to crash or reboot appliances, disrupting VPN, SAML authentication, and application delivery. The vulnerability is actively exploited and listed in CISA's KEV; vendors and CCB recommend urgent patching to fixed builds and increased monitoring for related suspicious activity.