Fiche vulnérabilité

CVE-2026-4408 : faille critique redhat openshift container platform (CVSS 9.8)

Description

A flaw was found in Samba. A remote attacker can exploit a misconfiguration in Samba file servers and classic domain controllers that use the "check password script" feature. If this script is configured with the %u substitution character, the client-controlled username is passed without proper escaping of shell meta-characters. This vulnerability allows an attacker to achieve remote command execution on the affected system. This issue primarily affects non-standard configurations where the "check password script" is used with %u and the samba-dcerpcd service is started as a system service.

En bref

Sévérité: Critique (CVSS 9.8)
Vecteur CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation active: Non signalée par la CISA
Publication: 28 mai 2026
Dernière mise à jour: 18 sept. 2026

Produits concernés

redhat openshift container platform
samba samba
redhat enterprise linux

Références

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