CVE Watch15 jul 2026

CVE-2026-4408

A flaw was found in Samba. A remote attacker can exploit a misconfiguration in Samba file servers and classic domain controllers that use th

CVSS

9.0

Crítico

EPSS

2.5%

p83

KEV

—

Exploit Today

0-100

Publicado: 28 may 2026 · Última mod.: 15 jul 2026 · CWE-78

EPSS · 30d

2.5%EPSS · 30 días2.5%

2026-06-302026-07-16

Descripción técnica

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.

Referencias oficiales

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