PT-2026-23041 · Cisco · Cisco Secure Firewall Asa+2

Jason Crowder · Published 2026-03-04 · Updated 2026-05-04 · CVE-2026-20024

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 attacker with the OSPF secret key, who is adjacent to an affected device, to cause the device to reload unexpectedly, leading to a denial-of-service (DoS) condition. This issue is caused by heap corruption when parsing packets within the OSPF service. An attacker could exploit this by sending crafted packets to the OSPF service, potentially corrupting the heap and triggering the reload.

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

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2026-20024

Affected Products

Cisco Asa

Cisco Secure Ftd

Cisco Secure Firewall Asa

References · 6

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ospf-ZH8PhbSW · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20024 · Security Note
• https://twitter.com/VulmonFeeds/status/2029405488937402554 · Twitter Post
• https://t.me/cveNotify/162033 · Telegram Post
• https://twitter.com/CVEnew/status/2029272773571252529 · Twitter Post
• https://t.me/CVEtracker/46350 · Telegram Post