Multiple Flaws in Citrix NetScaler ADC and Gateway Pose Immediate Threat
Recent Citrix NetScaler vulnerabilities, including CVE‑2025‑6543 (memory overflow) and CVE‑2025‑5777 (CitrixBleed 2), pose critical risks like DoS, session hijacking, and MFA bypass. Both vulnerabilities are now being actively exploited in the wild. Affected versions include NetScaler ADC/Gateway prior to 14.1‑47.46 and 13.1‑59.19, as well as all EOL versions, including 12.1 and 13.0. Urgent patching and post-update session termination are strongly recommended.
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