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    Citrix NetScaler SAML zero-day actively exploited, added to CISA KEV●🚨 Citrix NetScaler SAML zero-day (CVE-2026-88779, CVSS 8.7) in CISA KEV. Actively exploited. Memory overflow in SAML hanMmastodonTechnologyCybersecurity23 h ago

    A zero-day vulnerability in Citrix NetScaler, tracked as CVE-2026-88779 with a CVSS score of 8.7, has been added to CISA's Known Exploited Vulnerabilities catalog amid reports of active exploitation. The flaw is a memory overflow in the SAML handler that can crash the appliance, disrupting VPN and SSO services for organizations using SAML SP or IdP configurations. Researchers warn it may bypass the previous patch. Fixed builds are 14.1-73.41 and 13.1-64.28, and administrators are urged to update immediately.