DEBIAN-CVE-2026-43859: mutt security update

DEBIAN-CVE-2026-43859, released May 4, 2026, fixes 1 CVE in mutt. None of them is reported as exploited. Patch Radar priority: Routine.

Routine

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

3.7

Base score, 0 to 10

Highest EPSS

0.0016

5th percentile

Fixed package versions

Product	Release	Fixed in
mutt	Debian 13.5 (trixie)	2.2.13-1+deb13u1
mutt	Debian 14	2.3.2-1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Routine	CVE-2026-43859	mutt: mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP auth_cram MD5 digest.	3.7	0.0016	None reported

Also fixes CVE-2026-43859

SUSE-SU-2026:22340-1
mutt on sles 16.0
OPENSUSE-SU-2026:21016-1
mutt on opensuse-leap 16.0

Vendor advisory

https://security-tracker.debian.org/tracker/CVE-2026-43859

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/fix/linux/debian-cve-2026-43859">DEBIAN-CVE-2026-43859 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Which servers are still behind?

Patchblox compares the installed package on every Linux machine against the fixed version for its release, including machines reported through Azure Update Manager.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.