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CVE-2025-20333: Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense

EPSS70.6%No. 721 of 1739 in KEV
CVE year2025listed the same year
Same vendor in KEV100
Same product2
FieldValue
VendorCisco
ProductSecure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense
NameCisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow Vulnerability
Added to KEV2025-09-25
US federal due date2025-09-26
Ransomware useUnknown
CWECWE-120

CISA 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 CVE-2025-20362.

Other entries for this product

CVEVendor / productAddedEPSSRansomware
CVE-2025-20362Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense2025-09-2587.0%Unknown

NVD — CVE-2025-20333

Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page

A Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2025-09-25.