CVE-2023-4874: debian debian_linux Undefined Behavior for Input to API
CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2023-4874DEBIAN-CVE-2023-4874
Published 09-09-2023Last modified 25-07-2026
Vulnerability summary
CVE-2023-4874 is a medium (CVSS 6.5) Undefined Behavior for Input to API vulnerability in debian debian_linux. EPSS estimates a 0.85% chance of exploitation in the next 30 days, higher than 57.3% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
0.85%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 9 · Related 5Timeline
- 09-09-2023PublishedVulnerability first disclosed.
- 25-07-2026Last modifiedVulnerability information updated.
Description
Null pointer dereference when viewing a specially crafted email in Mutt >1.5.2 <2.2.12
CVSS metrics
4 scores · 4 sources · 1 versionMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSources4 sources · 4.3–6.5
- CVE.orgCNA4.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LDiffers
- OSV · UbuntuEcosystem advisory · calculated4.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LDiffers
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.85%
Chance of exploitation in the next 30 days
Percentile
57%
Versus all other CVEs
30-day change
0.00 pp
From 0.85% on 19-09-2026
19-09-202619-10-2026
EPSS score0.85%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- mutt< 2.2.9-1+deb12u1 | < 2.2.12-0.1
- debian_linuxEOL10.0 | 11.0 | 12.0
Mutt1 product
- mutt≥ 1.5.2, < 2.2.12 | > 1.5.2, < 2.2.12
Ubuntu1 product
- mutt< 1.5.24-1ubuntu0.6+esm3 | < 1.9.4-3ubuntu0.6+esm1 | < 1.13.2-1ubuntu0.6 | < 2.1.4-1ubuntu1.2
3 vendors · 4 products
References
15 links- gitlab.com/muttmua/mutt/-/commit/452ee330e094bfc7c9a68555e5152b1826534555.patchREPORTVendor Advisory
- gitlab.com/muttmua/mutt/-/commit/a4752eb0ae0a521eec02e59e51ae5daedf74fda0.patchREPORTVendor Advisory
- www.openwall.com/lists/oss-security/2023/09/26/6X Transferred
