CVE-2026-20025

MEDIUM

6.8

CVSS Score

Published: March 4, 2026 at 06:36 PM UTC

Updated: August 11, 2026 at 07:40 PM UTC

2 products affected across 1 vendorAdaptive Security ApplianceSecure Firewall Threat Defense

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Severity

MEDIUM6.8

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Adaptive Security Appliance · Cisco

95%

9.12.1 ≤ v < 9.16.4.859.17.1 ≤ v < 9.18.4.669.19.1 ≤ v < 9.20.49.22.1.1 ≤ v < 9.22.2.49.23.1 ≤ v < 9.23.1.79.12.1 9.12.1.2 9.12.1.3 9.12.2 9.12.2.1 9.12.2.4 9.12.2.5 9.12.2.9 9.12.3 9.12.3.12 9.12.3.2 9.12.3.7 9.12.3.9 9.12.4 9.12.4.10 9.12.4.13 9.12.4.18 9.12.4.2 9.12.4.24 9.12.4.26 9.12.4.29 9.12.4.30 9.12.4.35 9.12.4.37 9.12.4.38 9.12.4.39 9.12.4.4 9.12.4.40 9.12.4.41 9.12.4.47 9.12.4.48 9.12.4.50 9.12.4.52 9.12.4.54 9.12.4.55 9.12.4.56 9.12.4.58 9.12.4.62 9.12.4.65 9.12.4.67 9.12.4.7 9.12.4.8 9.16.1 9.16.1.28 9.16.2 9.16.2.11 9.16.2.13 9.16.2.14 9.16.2.3 9.16.2.7 9.16.3 9.16.3.14 9.16.3.15 9.16.3.19 9.16.3.23 9.16.3.3 9.16.4 9.16.4.14 9.16.4.19 9.16.4.27 9.16.4.38 9.16.4.39 9.16.4.42 9.16.4.48 9.16.4.55 9.16.4.57 9.16.4.61 9.16.4.62 9.16.4.67 9.16.4.70 9.16.4.71 9.16.4.76 9.16.4.82 9.16.4.84 9.16.4.9 9.17.1 9.17.1.10 9.17.1.11 9.17.1.13 9.17.1.15 9.17.1.20 9.17.1.30 9.17.1.33 9.17.1.39 9.17.1.45 9.17.1.46 9.17.1.7 9.17.1.9 9.18.1 9.18.1.3 9.18.2 9.18.2.5 9.18.2.7 9.18.2.8 9.18.3 9.18.3.39 9.18.3.46 9.18.3.53 9.18.3.55 9.18.3.56 9.18.4 9.18.4.22 9.18.4.24 9.18.4.29 9.18.4.34 9.18.4.40 9.18.4.47 9.18.4.5 9.18.4.50 9.18.4.52 9.18.4.53 9.18.4.57 9.18.4.66 9.18.4.67 9.18.4.68 9.18.4.8 9.19.1 9.19.1.12 9.19.1.18 9.19.1.22 9.19.1.24 9.19.1.27 9.19.1.28 9.19.1.31 9.19.1.37 9.19.1.38 9.19.1.42 9.19.1.5 9.19.1.9 9.20.1 9.20.1.5 9.20.2 9.20.2.10 9.20.2.21 9.20.2.22 9.20.3 9.20.3.10 9.20.3.13 9.20.3.16 9.20.3.20 9.20.3.4 9.20.3.7 9.20.3.9 9.20.4 9.20.4.7 9.22.1.1 9.22.1.2 9.22.1.3 9.22.1.6 9.22.2 9.22.2.4 9.22.2.9 9.23.1 9.23.1.13 9.23.1.3 9.23.1.7

Affected range stops below 9.16.4.85, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.18.4.66, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.20.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.22.2.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.23.1.7, so it looks safe — our inference, not a vendor statement

Secure Firewall Threat Defense · Cisco

95%

6.4.0 ≤ v < 7.0.97.1.0 ≤ v < 7.2.117.3.0 ≤ v < 7.4.37.6.0 ≤ v < 7.6.47.7.0 ≤ v < 7.7.116.4.0 6.4.0.1 6.4.0.10 6.4.0.11 6.4.0.12 6.4.0.13 6.4.0.14 6.4.0.15 6.4.0.16 6.4.0.17 6.4.0.18 6.4.0.2 6.4.0.3 6.4.0.4 6.4.0.5 6.4.0.6 6.4.0.7 6.4.0.8 6.4.0.9 7.0.0 7.0.0.1 7.0.1 7.0.1.1 7.0.2 7.0.2.1 7.0.3 7.0.4 7.0.5 7.0.6 7.0.6.1 7.0.6.2 7.0.6.3 7.0.7 7.0.8 7.0.8.1 7.1.0 7.1.0.1 7.1.0.2 7.1.0.3 7.2.0 7.2.0.1 7.2.1 7.2.10 7.2.10.2 7.2.2 7.2.3 7.2.4 7.2.4.1 7.2.5 7.2.5.1 7.2.5.2 7.2.6 7.2.7 7.2.8 7.2.8.1 7.2.9 7.3.0 7.3.1 7.3.1.1 7.3.1.2 7.4.0 7.4.1 7.4.1.1 7.4.2 7.4.2.1 7.4.2.2 7.4.2.3 7.4.2.4 7.6.0 7.6.1 7.6.2 7.6.2.1 7.7.0 7.7.10 7.7.10.1

Affected range stops below 7.0.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.2.11, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.4.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.6.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.7.11, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ospf-ZH8PhbSW

References (1)

Vendor Advisory

Source: cverecord

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ospf-ZH8PhbSW

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.8MEDIUMcisco

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: CHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-190

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