CVE-2025-26465mediumCWE-390

CVE-2025-26465: falha de média gravidade em OpenSSH

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

Publicada em · Atualizada em

Seguir esta CVE+ Monitorar Red Hat Enterprise Linux+ Monitorar Red Hat OpenShift Container Platform

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

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
Produtos afetados
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
CVEs relacionadas — OpenSSH

No mesmo produto, das mais perigosas para as menos.

CVE-2024-6387HIGHOpenssh: regresshion - race condition in ssh allows rce/dosEPSS 99.5%CVE-2024-3094CRITICALXz: malicious code in distributed sourceEPSS 90.9%CVE-2024-12084CRITICALRsync: heap buffer overflow in rsync due to improper checksum length handlingEPSS 72.5%CVE-2025-10230CRITICALSamba: command injection in wins server hook scriptEPSS 39.8%CVE-2025-26466MEDIUMOpenssh: denial-of-service in opensshEPSS 38.7%CVE-2026-4480CRITICALSamba: samba: remote code execution in printing subsystem via unescaped job descriptionEPSS 28.7%