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No exploitation reportedAwaiting NVD analysis

CVE-2026-125391

Webmin through 2.670 OS Command Injection via Samba User Account Options

No exploitation reported by the sources we read.

  • Published2026-11-09
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2026-11-0923:27CVE publishedCNA

Versions per branch

Products declared by the CNA

As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • webminother versions: not affected
    Affected
    • ≤ 2.670no fix statedcustom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-09

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-125391 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE record2026-11-09
  • CNACVSS 4.08.62026-11-09
  • CNACVSS 3.17.22026-11-09
  • CNAweakness (CWE)CWE-782026-11-09

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Published
2026-11-09

Frequently asked questions

What is CVE-2026-125391?

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.

Is CVE-2026-125391 actively exploited?

Active exploitation of CVE-2026-125391 has not been confirmed.

What is the CVSS score for CVE-2026-125391?

CVE-2026-125391 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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