kbrain

CVE-2026-20024

MEDIUM · CVSS 6.8EPSS 0.2%EU EUVD

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 heap corruption in OSPF when parsing packets. An attacker could exploit this vulnerability by sending crafted packets to the OSPF service. A successful exploit could allow the attacker to corrupt the heap, causing the affected 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-119
EPSS score
0.2% (9th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2026-9481)
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-2026-9481 in the EU Vulnerability Database. Last updated in EUVD on March 4, 2026.

View on the EU Vulnerability Database

Affected products

  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software
  • cisco / adaptive security appliance software

and 159 more…

Certified products that may be affected

2 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain