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Fencer Vulns
medium 4.3

CVE-2023-4874 json

Undefined Behavior for Input to API in Mutt

published 2023-09-09 3 y ago modified 2026-07-25 3 mo ago also EUVD-2023-54713

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

Null pointer dereference when viewing a specially crafted email in Mutt >1.5.2 <2.2.12

Patch / fix

  • Mutt Mutt 2.2.12
  • mutt Debian 12 2.2.9-1+deb12u1
  • mutt Debian 14, Debian 13 2.2.12-0.1

debian advisories DEBIAN-CVE-2023-4874

  • mutt Ubuntu 20.04 LTS 1.13.2-1ubuntu0.6
  • mutt Ubuntu 22.04 LTS 2.1.4-1ubuntu1.2
  • mutt Ubuntu Pro 16.04 LTS 1.5.24-1ubuntu0.6+esm3
  • mutt Ubuntu Pro 18.04 LTS 1.9.4-3ubuntu0.6+esm1

ubuntu advisories UBUNTU-CVE-2023-4874

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • mutt RHEL 8 5:2.0.7-3.el8
  • mutt RHEL 9 5:2.2.6-2.el9

red hat advisories RHSA-2024:3058RHSA-2024:2290

  • mutt SLE Module for Basesystem 15 SP5, SLE Module for Basesystem 15 SP4, openSUSE Leap 15.5 +3 more 1.10.1-150000.3.26.1
  • mutt SLES for SAP 12 SP5, SLES 12 SP5 1.10.1-55.30.1

suse advisories SUSE-SU-2023:3826-1SUSE-SU-2023:3702-1

  • mutt openSUSE Tumbleweed 2.2.12-1.1

opensuse advisories openSUSE-SU-2024:13222-1

  • mutt AlmaLinux 8 5:2.0.7-3.el8
  • mutt AlmaLinux 9 5:2.2.6-2.el9

almalinux advisories ALSA-2024:3058ALSA-2024:2290

  • mutt Rocky Linux 9 5:2.2.6-2.el9
  • mutt Rocky Linux 8 5:2.0.7-3.el8

rocky linux advisories RLSA-2024:2290RLSA-2024:3058

  • mutt CBL-Mariner 2.0 2.2.12-1

azure linux advisories AZL-28698

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-4874 updated cvss 5.7

mutt: null pointer dereference

  • Red Hat Enterprise Linux AppStream (v. 8) mutt 2.0.7-3.el8
    fixed: vendor fix RHSA-2024:3058
  • Red Hat Enterprise Linux AppStream (v. 9) mutt 2.2.6-2.el9
    fixed: vendor fix RHSA-2024:2290

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Mutt Mutt

Classification

Weakness
  • CWE-475 Undefined Behavior for Input to API
  • CWE-476 NULL Pointer Dereference

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.