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CVE-2026-55653

OpenSSH

Descrição

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).

CVSS 4.3EPSS 0.28300000000000003%Risco 0.44
Ver fonte
Publicação
2026-06-23 04:17:36
Versões afetadas
unknown
Tipo
Software crítico
Última alteração
2026-07-30 09:16:35
Vetor
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Sistemas operativos
Linux