CVE-2026-20021

OSPF Memory Exhaustion Leading to Denial of Service in Cisco Secure Firewall Devices

Published Mar 4, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

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 authenticated, adjacent attacker to exhaust memory on an affected device, resulting in a denial of service (DoS) condition.

This vulnerability is due to improperly validating input by the OSPF protocol when parsing packets. An attacker could exploit this vulnerability by by sending crafted OSPF packets to an affected device. A successful exploit could allow the attacker to exhaust memory on the affected device, resulting in a DoS condition.

Affected Products

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	—
`9.16.4.85`	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	—
`9.20.4.10`	affected	—
`9.20.4.14`	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	—
`9.22.2.13`	affected	—
`9.22.2.14`	affected	—
`9.23.1`	affected	—
`9.23.1.3`	affected	—
`9.23.1.7`	affected	—
`9.23.1.13`	affected	—
`9.23.1.19`	affected	—
`9.23.1.22`	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	—
`7.4.3`	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	—

Configuration 1 [-]

OR	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::

Configuration 2 [-]

OR	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.2:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.3:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.4:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.5:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.6:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.7:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.8:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.9:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.10:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.11:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.12:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.13:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.14:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.15:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.16:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.17:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.18:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.0:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.0.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.1.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.2:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.2.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.3:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.4:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.5:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.6:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.6.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.6.2:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.6.3:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.7:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.8:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.8.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0.2:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0.3:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.0:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.0.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.2:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.3:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.4:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.4.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.5:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.5.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.5.2:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.6:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.7:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.8:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.8.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.9:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.10:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.10.2:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.3.0:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.3.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.3.1.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.3.1.2:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.0:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.1.1:::::::*
	cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.1:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.2:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.3:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.4:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.3:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.0:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.1:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.2:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.2.1:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.0:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.10:::::::*
cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.10.1:::::::*

No data.

Vendor Product Versions

Cisco

Adaptive Security Appliance Software

Version	Status	Scheme	Platform
`[9.12.1,9.23.1.22]`	affected	generic	—

Cisco

Secure Firewall Threat Defense

Version	Status	Scheme	Platform
`[6.4.0,7.7.10.1]`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.221% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

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

History

Aug 11, 2026 8:00 PM Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
CPEs	cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.10:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.11:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.12:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.13:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.14:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.15:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.16:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.17:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.18:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.4:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.5:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.6:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.7:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.8:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.9:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.0.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.1.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.2.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.4:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.5:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.6.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.6.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.6.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.6:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.7:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.8.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.8:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.1.0.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.1.0.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.1.0.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.1.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.0.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.10.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.10:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.4.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.4:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.5.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.5.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.5:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.6:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.7:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.8.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.8:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.9:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.1.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.1.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.1.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.2.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.2.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.2.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.2.4:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.6.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.6.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.6.2.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.6.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.7.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.7.10.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.7.10:::::::*	cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.10:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.11:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.12:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.13:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.14:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.15:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.16:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.17:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.18:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.2:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.3:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.4:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.5:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.6:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.7:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.8:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0.9:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:6.4.0:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.0.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.0:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.1.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.2.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.2:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.3:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.4:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.5:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.6.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.6.2:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.6.3:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.6:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.7:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.8.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.0.8:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0.2:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0.3:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.1.0:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.0.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.0:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.10.2:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.10:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.2:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.3:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.4.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.4:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.5.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.5.2:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.5:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.6:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.7:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.8.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.8:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.9:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.3.0:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.3.1.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.3.1.2:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.3.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.0:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.1.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.2:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.3:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2.4:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.2:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.4.3:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.0:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.2.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.2:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.0:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.10.1:::::::* cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.10:::::::*
Vendors & Products	Cisco firepower Threat Defense Software

Apr 18, 2026 10:15 AM Title updated View changes

Type	Values Removed	Values Added
Title		OSPF Memory Exhaustion Leading to Denial of Service in Cisco Secure Firewall Devices

Apr 16, 2026 8:45 PM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Cisco firepower Threat Defense Software
CPEs		cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.10:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.11:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.12:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.13:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.14:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.15:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.16:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.17:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.18:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.4:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.5:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.6:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.7:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.8:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0.9:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:6.4.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.0.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.1.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.2.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.4:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.5:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.6.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.6.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.6.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.6:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.7:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.8.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.0.8:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.1.0.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.1.0.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.1.0.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.1.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.0.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.10.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.10:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.4.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.4:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.5.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.5.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.5:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.6:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.7:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.8.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.8:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.2.9:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.1.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.1.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.3.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.1.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.2.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.2.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.2.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.2.4:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.4.3:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.6.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.6.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.6.2.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.6.2:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.7.0:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.7.10.1:::::::* cpe:2.3:a:cisco:firepower_threat_defense_software:7.7.10:::::::* cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
Vendors & Products		Cisco firepower Threat Defense Software

Mar 5, 2026 9:15 AM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Cisco Cisco adaptive Security Appliance Software Cisco secure Firewall Threat Defense
Vendors & Products		Cisco Cisco adaptive Security Appliance Software Cisco secure Firewall Threat Defense

Mar 4, 2026 10:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Mar 4, 2026 7:00 PM Description updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
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 authenticated, adjacent attacker to exhaust memory on an affected device, resulting in a denial of service (DoS) condition. This vulnerability is due to improperly validating input by the OSPF protocol when parsing packets. An attacker could exploit this vulnerability by by sending crafted OSPF packets to an affected device. A successful exploit could allow the attacker to exhaust memory on the affected device, resulting in a DoS condition.
Weaknesses		CWE-401
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ospf-ZH8PhbSW
Metrics		cvssV3_1 `{'score': 4.3, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}`