🛡️ CVE-2026-20023
🟡 CVSS 6.1 — Medium ✅ No Known Exploit CWE-787 NVD
6.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A vulnerability in the OSPF protocol of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to corrupt memory on an affected device, resulting in a denial of service (DoS) condition. This vulnerability is due to memory corruption when parsing OSPF protocol packets. An attacker could exploit this vulnerability by sending crafted OSPF packets to an affected device. A successful exploit could allow the attacker to cause memory corruption causing the affected device to reboot, resulting in a DoS condition.

Details

Severity MEDIUM
CVSS Score 6.1
CVSS Vector CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE CWE-787
Public Exploit ✅ No
Source NVD
Published 2026-03-04
Updated 2026-06-02
Modified 2026-05-04
Fix URL N/A

Affected Packages

Software From version Fixed in
adaptive-security-appliance-software — —
firepower-threat-defense-software — —

Similar Threats

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