CVE-2026-4408
9.8
CRITICAL
CVSS 3.1
EPSS 2.5%
描述
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.
如何修補 CVE-2026-4408
要修補 CVE-2026-4408,請將受影響套件升級到下列已修補版本。
- —升級至 4.22.10-r0 或更新版本
CVE-2026-4408 正在被利用嗎?
低 — EPSS 為 2.5%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 4.1.0, < 4.22.10-r0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |