CVE-2025-26465mediumCWE-390

CVE-2025-26465: fallo de gravedad media en OpenSSH

Openssh: machine-in-the-middle attack if verifyhostkeydns is enabled

Publicada el · Actualizada el

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13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 6.8epss 7.7%
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:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Productos afectados
OpenSSHRed Hat · Red Hat Discovery 1.14Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat · Red Hat OpenShift Container Platform 4
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