CISA Says Attackers Are Exploiting Two Critical Citrix NetScaler Flaws Globally

The Hacker News · Monday, 28 September 2026 at 07:21 (3d ago) · Original article ↗

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Sunday added two critical Citrix NetScaler ADC and Gateway flaws to its Known Exploited Vulnerabilities (KEV) catalog, following reports of active exploitation.

CVE-2026-88771 (CVSS score: 9.5) - An improper input validation vulnerability that could allow an unauthenticated attacker to

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CISA Says Attackers Are Exploiting Two Critical Citrix NetScaler Flaws Globally

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