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CISA Says Attackers Are Exploiting Two Critical Citrix NetScaler Flaws Globally

The Hacker News·September 28, 2026·1 min read
CISA Says Attackers Are Exploiting Two Critical Citrix NetScaler Flaws Globally

CISA added two critical Citrix NetScaler ADC and Gateway flaws to its Known Exploited Vulnerabilities catalog on Sunday, following reports of active exploitation. The vulnerabilities include CVE-2026-88771, a CVSS 9.5 improper input validation issue that could allow an unauthenticated attacker to compromise systems.

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