PT-2026-23042 · Cisco · Cisco Secure Ftd+2

Jason Crowder · Published 2026-03-04 · Updated 2026-06-05 · CVE-2026-20025

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco Secure Firewall ASA Software and Cisco Secure FTD Software (affected versions not specified)

Description A flaw exists in the OSPF protocol that may allow an authenticated, adjacent attacker to cause an unexpected reload of the device, leading to a denial-of-service (DoS) condition. The issue stems from inadequate input validation when handling OSPF link-state update (LSU) packets. An attacker could exploit this by sending specially crafted OSPF LSU packets, potentially corrupting the heap and triggering the DoS. To successfully exploit this, the attacker must possess the OSPF secret key.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2026-20025

Affected Products

Cisco Asa

Cisco Secure Ftd

Cisco Secure Firewall Asa

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-20025 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ospf-ZH8PhbSW · Vendor Advisory
• https://twitter.com/CVEnew/status/2029272772564672964 · Twitter Post
• https://t.me/CVEtracker/46351 · Telegram Post
• https://t.me/cveNotify/166169 · Telegram Post