CVE-2026-43859 :: Enginsight Vulnerability Database

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
mitre	CNA	3.7 LOW	NETWORK	HIGH	NONE	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 8%

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
mutt	mutt	𝑥 < 2.3.2	CNA

Debian Releases

Debian Product

Codename

mutt

bookworm	no-dsa
bookworm (security)	vulnerable
bullseye	vulnerable
bullseye (security)	vulnerable
forky	vulnerable
sid	vulnerable
trixie	no-dsa

Common Weakness Enumeration

CWE-158 - Improper Neutralization of Null Byte or NUL Character
The software receives input from an upstream component, but it does not neutralize or incorrectly neutralizes NUL characters or null bytes when they are sent to a downstream component.

Vulnerability Media Exposure

[GERMAN] mutt: Mehrere Schwachstellen
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in mutt ausnutzen, um Sicherheitsvorkehrungen zu umgehen und um einen Denial-of-Service-Zustand herbeizuführen.
Published: 2026-05-03T22:00:00+00:00

References

https://github.com/muttmua/mutt/commit/834c5a2ed0479e51e8662a31caed129f136f4805