Critical Citrix NetScaler Vulnerability (CVE-2026-88772) Actively Exploited Globally

Cybersecurity researchers have detailed a critical memory overflow vulnerability (CVE-2026-88772, CVSS score: 9.5) in Citrix NetScaler ADC and Gateway, which is being actively exploited in the wild. The flaw, related to Datagram Transport Layer Security (DTLS) protocol handling, allows for remote code execution or denial-of-service, with CISA urging federal agencies to apply fixes by September 30, 2026.