What’s Vulnerable › Vulnerabilities
CVE-2026-20025
- Severity: medium (CVSS 6.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-03-04 · updated 2026-08-11
- Weakness: CWE-190
Description
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 exploit this vulnerability, the attacker must have the OSPF secret key. This vulnerability is due to insufficient input validation when processing OSPF link-state update (LSU) packets. An attacker could exploit this vulnerability by sending crafted OSPF LSU packets. A successful exploit could allow the attacker to corrupt the heap, causing the device to reload, resulting in a DoS condition.
Affected products
- Cisco ASA Software: from 9.12.1 before 9.16.4.85; from 9.17.1 before 9.18.4.66; from 9.19.1 before 9.20.4; from 9.22.1.1 before 9.22.2.4; from 9.23.1 before 9.23.1.7 — fixed in 9.16.4.85, 9.18.4.66, 9.20.4, 9.22.2.4, 9.23.1.7
- Cisco Firepower Threat Defense Software: from 6.4.0 before 7.0.9; from 7.1.0 before 7.2.11; from 7.3.0 before 7.4.3; from 7.6.0 before 7.6.4; from 7.7.0 before 7.7.11 — fixed in 7.0.9, 7.2.11, 7.4.3, 7.6.4, 7.7.11
How to fix
Upgrade to a fixed version: Cisco ASA Software 9.16.4.85, 9.18.4.66, 9.20.4, 9.22.2.4; Cisco Firepower Threat Defense Software 7.0.9, 7.2.11, 7.4.3, 7.6.4. Check the vendor advisory for mitigations.
References
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