CVE-2026-126780

HIGH
MEDIUM Priority: 0.05 BB Relevance: 62/100
Published: 2026-11-11 Modified: 2026-11-12 First seen: 2026-11-11 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: High
UI: None
AT: None
VC: High
VI: High
VA: High

Description

Webmin through 2.670 contains a privilege escalation vulnerability in acl/save_group.cgi that allows delegated administrators to grant unauthorized modules by submitting arbitrary module lists in the mod parameter. Attackers with Webmin Users module access can create or edit groups holding modules like Command Shell and assign themselves membership to execute commands as root.

Affected Software (2)

VendorProductVersion
webmin webmin 0
webmin webmin 0

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.6 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.59%
Raw Score 0.005890
Percentile 48.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00589
2026-11-12
0.00589

Intelligence Sources

mitre ref →
nvd ref →