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CVE-2025-20333

Severity
CRITICAL
CVSS
9.9
EPSS
0.40391
Risk score
78.74
CISA KEV
Yes
PoC
No
Published
2025-09-25
Modified
2025-09-25
First seen
2026-08-07
Aliases
EUVD-2025-31140, GHSA-VG93-6W2X-3CVP
Products
Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.2.4, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.24, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.29, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.35, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.52, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.58, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.4.8, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14.3.15, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14.4, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.14.4.23, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.3.23, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.4, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.4.57, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16.4.71, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17.1.11, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17.1.33, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17.1.39, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18.1, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18.3, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18.4, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18.4.22, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19.1.18, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19.1.27, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19.1.9, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.20.2.22, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.22.1.1, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.1.5, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.14, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.26, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.28, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.3.18, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.26, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.34, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.41, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.46, Cisco:Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.4.8, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.10, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.12, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.4, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.8, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 6.6.0.1, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5.1, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 7.0.8, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.2, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 7.2.5, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.1, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.2, Cisco:Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1, Cisco:Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense
Sources
euvd EUVD-2025-31140
cisa.gov CVE-2025-20333

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.

References