FICHE CVE

CVE-2025-26465

Publiée le 2025-02-18 · Dernière modification le 2026-10-21

A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.

CVSS 3.16.8 MOYENNE

Type de faiblesse

CWE-390