Null pointer dereference when composing from a specially crafted draft message in Mutt >1.5.2 <2.2.12
CVE-2023-4875
MEDIUMNVD 5.72.2▼
EchelonGraph scoreMEDIUM confidence
Score 2.2 from GitHub Security Advisory published 2023-09-09. NVD baseline CVSS 2.2; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.7Exploit: NoneExposed: 0
A fix is available — apply it.
- CVSS v3
- 5.7
- EG Score
- 2.2(medium)
- EPSS
- 39.6%
- KEV
- Not listed
Published
September 9, 2023
Last Modified
June 17, 2026
References (7)
- cve@gitlabhttps://gitlab.com/muttmua/mutt/-/commit/452ee330e094bfc7c9a68555e5152b1826534555.patch
- cve@gitlabhttps://gitlab.com/muttmua/mutt/-/commit/4cc3128abdf52c615911589394a03271fddeefc6.patch
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2023/09/26/6
- af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/muttmua/mutt/-/commit/452ee330e094bfc7c9a68555e5152b1826534555.patch
- af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/muttmua/mutt/-/commit/4cc3128abdf52c615911589394a03271fddeefc6.patch
- af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/09/msg00021.html
- af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2023/dsa-5494
Patch Availability(4)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | mutt (2.2.9-1ubuntu0.23.10.1) @ mantic | 2026-05-24 | ubuntu |
| ubuntu | mutt-patched (1.5.24-1ubuntu0.6+esm3) @ xenial | 2026-05-24 | ubuntu |
| redhat | mutt-5:2.0.7-3.el8 | 2024-05-22 | redhat |
| redhat | mutt-5:2.2.6-2.el9 | 2024-04-30 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(5)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Frequently asked(5)
What is CVE-2023-4875?
CVE-2023-4875 is a medium vulnerability published on September 9, 2023. Null pointer dereference when composing from a specially crafted draft message in Mutt >1.5.2 <2.2.12
When was CVE-2023-4875 disclosed?
CVE-2023-4875 was first published in the National Vulnerability Database on September 9, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-4875 actively exploited?
CVE-2023-4875 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 39.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-4875?
CVE-2023-4875 has a CVSS v3 base score of 5.7 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 2.2.
How do I remediate CVE-2023-4875?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-4875, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2023-4875
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