#VU124014 Resource management error in openssh-server (Ubuntu package) - CVE-2026-3497

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Main Vulnerability Database Vulnerabilities #VU124014

#VU124014 Resource management error in openssh-server (Ubuntu package) - CVE-2026-3497

Published: March 13, 2026


Vulnerability identifier: #VU124014
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-3497
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
openssh-server (Ubuntu package)
Software vendor:
Canonical Ltd.

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect handling of disconnecting clients in OpenSSH GSSAPI Key Exchange when GSSAPIKeyExchange setting is enabled. An authenticated user can crash the OpenSSH server or potentially execute arbitrary code.


Remediation

Install updates from vendor's website.

External links