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CVE-2025-203339.9/CRITICALEPSS 72.0%CISA KEV
2025-09-25

Cisco ASA and FTD VPN Web Server Remote Code Execution Vulnerability (CVE-2025-20333) Security Advisory

[Affected Scope] Cisco Secure Firewall ASA (Adaptive Security Appliance) and FTD (Threat Defense) software with VPN web server features enabled

[Impact] An authenticated remote attacker with valid VPN credentials can execute arbitrary code with root privileges, leading to complete compromise of the device

[Mitigation] Apply official vendor security patches immediately, enforce Multi-Factor Authentication (MFA) on all VPN accounts, and monitor HTTP traffic logs

CVE Vulnerability Advisory Database (CVSS ยท CISA KEV ยท EPSS) | CVE Pulse