The Hacker News

New NetScaler Zero-Day Exploited in Targeted Attacks Can Knock SAML Deployments Offline

Citrix patches CVE-2026-88779 after targeted zero-day attacks caused denial-of-service on SAML-enabled NetScaler deployments.

Citrix patches NetScaler SAML zero-day exploited in attacks

Citrix has released emergency updates for a new NetScaler denial-of-service vulnerability tracked as CVE-2026-88779 that has been exploited in zero-day attacks, with researchers investigating whether ...
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CISA flags new exploited NetScaler flaw as attackers crash appliances (CVE-2026-88779)

CVE-2026-88779, a memory overflow bug that can cripple vulnerable NetScaler ADCs and Gateways, has been added to CISA's KEV catalog.
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Netscaler vulnerability was exploited as zero-day for nearly two months (CVE-2025-6543)

FortiGuard Labs has reported a dramatic spike in exploitation attempts targeting CitrixBleed 2, a critical buffer over‑read flaw (CVE‑2025‑5777) affecting Citrix NetScaler ADC (Application Delivery ...
Dark Reading

Attackers Exploit Citrix Zero-Day Bug to Pwn NetScaler ADC, Gateway

Cyberattackers are actively exploiting a critical remote code execution (RCE) bug in several versions of Citrix's NetScaler ADC and NetScaler Gateway application delivery and remote access ...