Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-42210— Webmin 2FA requirement bypass

Quick assessment

Affected
webmin webmin
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Webmin是Webmin团队开源的一套基于Web的用于类Unix操作系统中的系统管理工具。 Webmin 2.640之前版本存在授权问题漏洞，该漏洞源于身份验证问题，可能导致知道用户名和密码的攻击者通过Basic认证绕过双因素认证。

AI Predicted 8.1 Difficulty: Easy EPSS 0.52% · P42

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
webmin webmin < 2.640 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-42210

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Webmin 2FA requirement bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Webmin is a web-based system administration tool for Unix-like servers. Prior to version 2.640, for Webmin accounts that require a second authentication factor (typically TOTP), an attacker with knowledge of the username and password can bypass the 2FA requirement by using Basic authentication. Webmin is a web-based system administration tool for Unix-like servers. As a workaround, apply the patch from commit da18a16c84ae5c0b78cad79609cb0efb174000ec manually.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Webmin 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Webmin是Webmin团队开源的一套基于Web的用于类Unix操作系统中的系统管理工具。 Webmin 2.640之前版本存在授权问题漏洞，该漏洞源于身份验证问题，可能导致知道用户名和密码的攻击者通过Basic认证绕过双因素认证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
webmin webmin < 2.640 -

II. Public POCs for CVE-2026-42210

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-42210

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-42210 (1)

Vendor Advisories for CVE-2026-42210 (1)

IV. Related Vulnerabilities

Same product: webmin
Same vendor: webmin
Same weakness: CWE-287

V. Comments for CVE-2026-42210

No comments yet

Leave a comment