CVE-2026-20025
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.
Key facts
- CVSS score
- 6.8 (v3.1)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H- Weakness (CWE)
- CWE-190
- EPSS score
- 0.2% (6th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2026-9482)
- Published
- March 4, 2026
- NVD last modified
- August 11, 2026
- Status
- Analyzed
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2026-9482 in the EU Vulnerability Database. Last updated in EUVD on March 4, 2026.
View on the EU Vulnerability DatabaseAffected products
- cisco / adaptive security appliance software
- cisco / secure firewall threat defense
Certified products that may be affected
2 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Cisco Secure Firewall Threat Defense (FTD) 7.4 with Secure Firewall Management Center (FMC) 7.4 and Secure Client 5.1 - Cisco Systems, Inc. - Common Criteria NSCIB-CC-2400046-01-CR - active
- Cisco Secure Firewall Threat Defense Virtual 7.4 with FMC/FMCv - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-11510-2025 - active
References
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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