CISA Mandates Urgent Patch for Actively Exploited Citrix NetScaler Vulnerability (CVE-2026-8452)

CISA added CVE-2026-8452 to its Known Exploited Vulnerabilities catalog, mandating U.S. federal agencies to patch Citrix NetScaler by August 29, 2026. The vulnerability, initially described as a denial-of-service issue, is now being actively exploited to achieve unauthenticated remote code execution. The flaw affects Citrix NetScaler systems and poses a critical security risk.