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Citrix NetScaler devices configured as Gateway or AAA virtual servers are vulnerable to an out-of-bounds read due to insufficient input validation.
Attackers can exploit this vulnerability remotely without authentication, leading to memory disclosure, session hijacking, or further system compromise. The issue is actively exploited in the wild.
Citrix NetScaler ADC
Remediation: Citrix has released security updates for affected versions. Users must upgrade to patched releases immediately and follow vendor guidance.
Patches available on Citrix’s official site
No temporary fixes provided
Apply Citrix patches immediately Review system logs for memory-related errors Monitor for suspicious activity or sessions
Review memory logs and session tokens Monitor network traffic for data leakage
6/16/2025
6/16/2025
No references provided
No affected organizations specified
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