#2
The Hacker News
general
October 05, 2026 at 06:40 UTC
New NetScaler Zero-Day Exploited in Targeted Attacks Can Knock SAML Deployments Offline
By [email protected] (The Hacker News)
AI Summary
Citrix patched CVE-2026-88779 (CVSS 8.7), a memory overflow vulnerability in NetScaler ADC and Citrix NetScaler Gateway that enables denial-of-service against SAML-based authentication deployments, with confirmed active exploitation in targeted attacks. The flaw emerged days after two other NetScaler zero-days were patched, suggesting attackers are actively researching the codebase for adjacent weaknesses. Organizations using SAML-authenticated NetScaler deployments are at particular risk and should apply the out-of-band patch immediately.
Relevance score: 87.0/100
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