CVE-2026-20024

Published Mar 4, 2026

Last updated 20 days ago

Overview

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 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.
Source
psirt@cisco.com
NVD status
Analyzed
Products
adaptive_security_appliance_software, firepower_threat_defense_software

Risk scores

CVSS 3.1

Type
Primary
Base score
5.7
Impact score
3.6
Exploitability score
2.1
Vector string
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Severity
MEDIUM

Weaknesses

psirt@cisco.com
CWE-119

Social media

Hype score
Not currently trending

Configurations