Vulnerability in Cisco Adaptive Security Appliance (Asa) Software
CVE-2025-20263
A vulnerability in the web services interface of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a buffer ove…
EPSS: 0.001 (24.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Adaptive Security Appliance (Asa) Software — versions 9.12.3, 9.8.3, 9.12.1
- Cisco Firepower Threat Defense Software — versions 6.2.3.14, 6.4.0.1, 6.2.3.7
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-20263?
- CVE-2025-20263 is a high-severity vulnerability in Cisco Adaptive Security Appliance (Asa) Software, classified under Integer Overflow to Buffer Overflow. CVSS score: 8.6/10. Published 2025-08-14.
- How severe is CVE-2025-20263?
- High severity. CVSS v3 base score is 8.6 out of 10.