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 insufficient input validation when processing OSPF link-state update (LSU) packets. An attacker could exploit this vulnerability by sending crafted OSPF LSU packets. A successful exploit could allow the attacker to corrupt the heap, causing the device to reload, resulting in a DoS condition.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Cisco Cisco Secure Firewall Adaptive Security Appliance (ASA) Software affected
Version Status Constraints
9.12.1 affected —
9.12.1.2 affected —
9.12.1.3 affected —
9.12.2 affected —
9.12.2.4 affected —
9.12.2.5 affected —
9.12.2.9 affected —
9.12.3 affected —
9.12.3.2 affected —
9.12.3.7 affected —
9.12.4 affected —
9.12.3.12 affected —
9.12.3.9 affected —
9.12.2.1 affected —
9.12.4.2 affected —
9.12.4.4 affected —
9.12.4.7 affected —
9.12.4.10 affected —
9.12.4.13 affected —
9.12.4.8 affected —
9.12.4.18 affected —
9.12.4.24 affected —
9.12.4.26 affected —
9.12.4.29 affected —
9.12.4.30 affected —
9.12.4.35 affected —
9.12.4.37 affected —
9.12.4.38 affected —
9.12.4.39 affected —
9.12.4.40 affected —
9.12.4.41 affected —
9.12.4.47 affected —
9.12.4.48 affected —
9.12.4.50 affected —
9.12.4.52 affected —
9.12.4.54 affected —
9.12.4.55 affected —
9.12.4.56 affected —
9.12.4.58 affected —
9.12.4.62 affected —
9.12.4.65 affected —
9.12.4.67 affected —
9.16.1 affected —
9.16.1.28 affected —
9.16.2 affected —
9.16.2.3 affected —
9.16.2.7 affected —
9.16.2.11 affected —
9.16.2.13 affected —
9.16.2.14 affected —
9.16.3 affected —
9.16.3.3 affected —
9.16.3.14 affected —
9.16.3.15 affected —
9.16.3.19 affected —
9.16.3.23 affected —
9.16.4 affected —
9.16.4.9 affected —
9.16.4.14 affected —
9.16.4.19 affected —
9.16.4.27 affected —
9.16.4.38 affected —
9.16.4.39 affected —
9.16.4.42 affected —
9.16.4.48 affected —
9.16.4.55 affected —
9.16.4.57 affected —
9.16.4.61 affected —
9.16.4.62 affected —
9.16.4.67 affected —
9.16.4.70 affected —
9.16.4.71 affected —
9.16.4.76 affected —
9.16.4.82 affected —
9.16.4.84 affected —
9.17.1 affected —
9.17.1.7 affected —
9.17.1.9 affected —
9.17.1.10 affected —
9.17.1.11 affected —
9.17.1.13 affected —
9.17.1.15 affected —
9.17.1.20 affected —
9.17.1.30 affected —
9.17.1.33 affected —
9.17.1.39 affected —
9.17.1.45 affected —
9.17.1.46 affected —
9.18.1 affected —
9.18.1.3 affected —
9.18.2 affected —
9.18.2.5 affected —
9.18.2.7 affected —
9.18.2.8 affected —
9.18.3 affected —
9.18.3.39 affected —
9.18.3.46 affected —
9.18.3.53 affected —
9.18.3.55 affected —
9.18.3.56 affected —
9.18.4 affected —
9.18.4.5 affected —
9.18.4.8 affected —
9.18.4.22 affected —
9.18.4.24 affected —
9.18.4.29 affected —
9.18.4.34 affected —
9.18.4.40 affected —
9.18.4.47 affected —
9.18.4.50 affected —
9.18.4.52 affected —
9.18.4.53 affected —
9.18.4.57 affected —
9.18.4.66 affected —
9.18.4.67 affected —
9.18.4.68 affected —
9.19.1 affected —
9.19.1.5 affected —
9.19.1.9 affected —
9.19.1.12 affected —
9.19.1.18 affected —
9.19.1.22 affected —
9.19.1.24 affected —
9.19.1.27 affected —
9.19.1.28 affected —
9.19.1.31 affected —
9.19.1.37 affected —
9.19.1.38 affected —
9.19.1.42 affected —
9.20.1 affected —
9.20.1.5 affected —
9.20.2 affected —
9.20.2.10 affected —
9.20.2.21 affected —
9.20.2.22 affected —
9.20.3 affected —
9.20.3.4 affected —
9.20.3.7 affected —
9.20.3.9 affected —
9.20.3.10 affected —
9.20.3.13 affected —
9.20.3.16 affected —
9.20.3.20 affected —
9.20.4 affected —
9.20.4.7 affected —
9.22.1.1 affected —
9.22.1.3 affected —
9.22.1.2 affected —
9.22.1.6 affected —
9.22.2 affected —
9.22.2.4 affected —
9.22.2.9 affected —
9.23.1 affected —
9.23.1.3 affected —
9.23.1.7 affected —
9.23.1.13 affected —
Cisco Cisco Secure Firewall Threat Defense (FTD) Software affected
Version Status Constraints
6.4.0 affected —
6.4.0.1 affected —
6.4.0.3 affected —
6.4.0.2 affected —
6.4.0.4 affected —
6.4.0.5 affected —
6.4.0.6 affected —
6.4.0.7 affected —
6.4.0.8 affected —
6.4.0.9 affected —
6.4.0.10 affected —
6.4.0.11 affected —
6.4.0.12 affected —
6.4.0.13 affected —
6.4.0.14 affected —
6.4.0.15 affected —
6.4.0.16 affected —
6.4.0.17 affected —
6.4.0.18 affected —
7.0.0 affected —
7.0.0.1 affected —
7.0.1 affected —
7.0.1.1 affected —
7.0.2 affected —
7.0.2.1 affected —
7.0.3 affected —
7.0.4 affected —
7.0.5 affected —
7.0.6 affected —
7.0.6.1 affected —
7.0.6.2 affected —
7.0.6.3 affected —
7.0.7 affected —
7.0.8 affected —
7.0.8.1 affected —
7.1.0 affected —
7.1.0.1 affected —
7.1.0.2 affected —
7.1.0.3 affected —
7.2.0 affected —
7.2.0.1 affected —
7.2.1 affected —
7.2.2 affected —
7.2.3 affected —
7.2.4 affected —
7.2.4.1 affected —
7.2.5 affected —
7.2.5.1 affected —
7.2.6 affected —
7.2.7 affected —
7.2.5.2 affected —
7.2.8 affected —
7.2.8.1 affected —
7.2.9 affected —
7.2.10 affected —
7.2.10.2 affected —
7.3.0 affected —
7.3.1 affected —
7.3.1.1 affected —
7.3.1.2 affected —
7.4.0 affected —
7.4.1 affected —
7.4.1.1 affected —
7.4.2 affected —
7.4.2.1 affected —
7.4.2.2 affected —
7.4.2.3 affected —
7.4.2.4 affected —
7.6.0 affected —
7.6.1 affected —
7.6.2 affected —
7.6.2.1 affected —
7.7.0 affected —
7.7.10 affected —
7.7.10.1 affected —

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ospf-ZH8PhbSW cve-icon cve-icon
History

Wed, 04 Mar 2026 19:00:00 +0000

Type Values Removed Values Added
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 insufficient input validation when processing OSPF link-state update (LSU) packets. An attacker could exploit this vulnerability by sending crafted OSPF LSU packets. A successful exploit could allow the attacker to corrupt the heap, causing the device to reload, resulting in a DoS condition.
Weaknesses CWE-190
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-03-04T18:36:02.331Z

Reserved: 2025-10-08T11:59:15.352Z

Link: CVE-2026-20025

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-04T19:16:15.547

Modified: 2026-03-04T19:16:15.547

Link: CVE-2026-20025

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses