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CVE-2026-20012

· Published 25/03/2026 16:16 · Modified 26/03/2026 15:13

Labels: CVE-2026-20012 2026-03-25CVE-2026-20012CWE-401[email protected]

Essential information

Published
25/03/2026 16:16
Modified
26/03/2026 15:13
Author
Creator
CVSS
8.6 HIGH (v3.1)
CISA KEV
No
CWE
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS metrics

Description

A vulnerability in the Internet Key Exchange version 2 (IKEv2) feature of Cisco IOS Software, Cisco IOS XE Software, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a memory leak, resulting in a denial of service (DoS) condition on an affected device. This vulnerability is due to improper parsing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit of Cisco IOS Software and IOS XE Software could allow the attacker to cause the affected device to reload, resulting in a DoS condition. A successful exploit of Cisco Secure Firewall ASA Software and Secure FTD Software could allow the attacker to partially exhaust system memory, resulting in system instability, such as the inability to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition.

NVD status

Status
Awaiting Analysis — CVE has been recently published to the CVE List and has been received by the NVD.
Source
[email protected]
NVD
View on NVD

Affected products (CPE)

ProductCPE
cisco / ios cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cisco / ios xe cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
cisco / secure firewall asa cpe:2.3:o:cisco:secure_firewall_asa:*:*:*:*:*:*:*:*
cisco / secure firewall ftd cpe:2.3:o:cisco:secure_firewall_ftd:*:*:*:*:*:*:*:*

References