---
cve: "CVE-2026-42210"
severity: "MEDIUM"
cvss: 5.3
epss: "0.5%"
vendor: "Webmin"
kev: false
exploited: false
published: "2026-07-20 17:03:09"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-25T11:17:58+02:00"
---

# CVE-2026-42210

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- da18a16c84ae5c0b78cad79609cb0efb174000ec (Commit)

## Referenzen

- <https://github.com/webmin/webmin/security/advisories/GHSA-qpww-fff2-6fgv>
- <https://github.com/webmin/webmin/commit/da18a16c84ae5c0b78cad79609cb0efb174000ec>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-42210) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_