What is the CVSS score of CVE-2026-20013?

CVE-2026-20013 has a CVSS 3.1 base score of 5.8 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L. EPSS exploitation probability: 0.1%.

Which versions of Cisco are affected by CVE-2026-20013?

CVE-2026-20013 presents moderate security risk rated CVSS 5.8. Exploitation could compromise the security of affected deployments.

How to fix or mitigate CVE-2026-20013?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Cisco CVE-2026-20013

MEDIUM

Memory Leak (CWE-401)

2026-03-04 psirt@cisco.com

Cisco Information Disclosure

5.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.8 MEDIUM

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:05 vuln.today

CVE Published

Mar 04, 2026 - 18:16 nvd

MEDIUM 5.8

DescriptionCVE.org

A vulnerability in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device that may also impact the availability of services to devices elsewhere in the network. This vulnerability is due to memory exhaustion caused by not freeing memory during IKEv2 packet processing. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to exhaust resources, causing a DoS condition that will eventually require the device to manually reload.

AnalysisAI

Unauthenticated remote attackers can trigger denial-of-service conditions in Cisco Secure Firewall ASA and Secure FTD Software by sending specially crafted IKEv2 packets that cause memory exhaustion due to improper memory management. A successful attack forces manual device reloads and can degrade network services across connected systems. No patch is currently available for this vulnerability.

Technical ContextAI

This vulnerability (CWE-401: Memory Leak) affects IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software. in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device that may also impact the availability of services to devices elsewhere in the network. This vulnerability is due to memory exhaustion caused by not freeing memory during IKEv2 packet processing. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful expl