#VU104034 Input validation error in OpenSSH - CVE-2025-26466

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Main Vulnerability Database Vulnerabilities #VU104034

#VU104034 Input validation error in OpenSSH - CVE-2025-26466

Published: February 18, 2025 / Updated: June 27, 2025


Vulnerability identifier: #VU104034
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2025-26466
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: Public exploit is available
Vulnerable software:
OpenSSH
Software vendor:
OpenSSH

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input related to SSH2_MSG_PING handling in sshd(8). A remote attacker can send specially crafted packets to the server and perform a denial of service (DoS) attack.


Remediation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

External links