SUSE SLES12 Security Update : mutt (SUSE-SU-2026:2300-1)

low Nessus Plugin ID 321070

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2300-1 advisory.

This update for mutt fixes the following issues

- CVE-2026-43859: `strfcpy` used instead of `memcpy` for the IMAP `auth_cram` MD5 digest (bsc#1263897).
- CVE-2026-43860: truncation of `hash_passwd` by one byte for IMAP `auth_cram` MD5 digest (bsc#1263896).
- CVE-2026-43861: missing check for `\0` in `url_pct_decode` (bsc#1263895).
- CVE-2026-43862: mishandling of the `imap_auth_gss` security level (bsc#1263894).
- CVE-2026-43863: infinite loop in `data_object_to_stream` in `crypt-gpgme.c` (bsc#1263893).
- CVE-2026-43864: NULL pointer dereference in function `show_sig_summary` (bsc#1263892).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected mutt package.

Plugin Details

Severity: Low

ID: 321070

File Name: suse_SU-2026-2300-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 6/14/2026

Updated: 6/14/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2026-43861

CVSS v3

Risk Factor: Low

Base Score: 3.7

Temporal Score: 3.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2026-43862

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:12, p-cpe:/a:novell:suse_linux:mutt

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 6/8/2026

Vulnerability Publication Date: 5/4/2026

Reference Information

CVE: CVE-2026-43859, CVE-2026-43860, CVE-2026-43861, CVE-2026-43862, CVE-2026-43863, CVE-2026-43864

SuSE: SUSE-SU-2026:2300-1

Detections

Analytics