🛡 CVE-2025-20333
Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow Vulnerability
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense CWE-120
Ransomware use
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CISA KEV
EPSS
40.4%
Elevated · 99th pct
Added to KEV
2025-09-25
CISA
Remediate by
2025-09-26
⚠ OVERDUE
CWE
CWE-120
weakness
📈 EPSS exploit probability
40.4%
FIRST EPSS — 30-day probability of exploitation in the wild · band Elevated · higher than 99% of all scored CVEs
⚠ KEV remediation overdue
CISA required federal remediation by 2025-09-26. This exploited vulnerability is past its Binding Operational Directive 22-01 due date — prioritize patch/mitigation and hunt for exploitation.
📄 Description
Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Software VPN Web Server contain a buffer overflow vulnerability that allows for remote code execution. This vulnerability could be chained with
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🔄 Internal pivots & actions
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