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CVE search · CVE-2026-55653

CVE-2026-55653

medium 6.5

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).

Open in the NVD CVE.org JSON

Details

Status
Modified
Published
Last changed
Source
secalert@redhat.com
Weakness
CWE-415

Severity

VersionScoreVectorSource
CVSS 3.1 medium 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L secalert@redhat.comSecondary
CVSS 3.1 medium 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H nvd@nist.govPrimary

Affected products

Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.

References