Buffer overflow in Cisco Adaptive_security_appliance_software
CVE-2026-20024
A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition. To e…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (1.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Adaptive_security_appliance_software — versions -9.12.1, 9.12.1.2, 9.12.1.3
- Cisco Secure Firewall Adaptive Security Appliance (Asa) Software — versions 9.12.1, 9.12.1.2, 9.12.1.3
- Cisco Secure Firewall Threat Defense (Ftd) Software — versions 6.4.0, 6.4.0.1, 6.4.0.3
- Cisco Firepower_threat_defense_software — versions 6.4.0, 6.4.0.1, 6.4.0.2
Weakness classification (CWE)
References
- cisco-sa-asaftd-ospf-ZH8PhbSW (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-20024?
- CVE-2026-20024 is a medium-severity vulnerability in Cisco Adaptive_security_appliance_software, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.8/10. Published 2026-03-04.
- How severe is CVE-2026-20024?
- Medium severity. CVSS v3 base score is 6.8 out of 10.