CVE-2026-125391

EUVD-2026-120554
Webmin through 2.670 contains an OS command injection vulnerability in samba/save_euser.cgi that allows authenticated Samba user maintainers to inject commands via unvalidated opts parameter. Attackers can embed shell metacharacters in account option flags passed by create_user and modify_user to backquote_logged, executing commands as root.
OS Command Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
7.2 HIGH
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 72.8%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
webminwebmin
𝑥
≤ 2.670
CNA
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://github.com/webmin/webmin
https://github.com/webmin/webmin/blob/2.670/samba/samba-lib.pl#L658
https://github.com/webmin/webmin/commit/18cab89b1fc74ab7e8b1b8b90bbccbe5aba99154
https://www.vulncheck.com/advisories/webmin-through-2.670-os-command-injection-via-samba-user-account-options