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.
Metrics
Affected Vendors & Products
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References
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 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 |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2026-03-04T18:35:06.717Z
Updated: 2026-03-04T21:30:11.471Z
Reserved: 2025-10-08T11:59:15.352Z
Link: CVE-2026-20021
Vulnrichment
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NVD
Status : Received
Published: 2026-03-04T19:16:12.150
Modified: 2026-03-04T19:16:12.150
Link: CVE-2026-20021
Redhat
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