---
cve: "CVE-2026-94184"
severity: "HIGH"
cvss: 8.1
epss: "26.6%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-09-21 15:17:38"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T23:19:57+02:00"
---

# CVE-2026-94184

> 8.1 HIGH

## Beschreibung

A stack-based buffer overflow flaw was found in fetchmail when built with NTLM support. A malicious or compromised mail server advertising NTLM authentication can send a crafted Type 2 challenge that causes fetchmail to write past a fixed stack buffer while building the NTLM authenticate response. This may lead to remote code execution depending on stack-frame layout, or to authentication failure or process termination under memory hardening.

Affects v5.0.8 through v6.6.6.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 9c0580c49c3047efe9906dbe2a7d7017fd6b3829 (Commit)

## Referenzen

- <https://access.redhat.com/security/cve/CVE-2026-94184>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2537395>
- <https://gitlab.com/fetchmail/fetchmail/-/commit/cb5be5c38471eec19e519ace0bc569176317ea92>
- <https://www.fetchmail.info/fetchmail-SA-2026-01.txt>
- <https://www.openwall.com/lists/oss-security/2026/06/27/8>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-94184) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_