An issue was discovered in Mutt before 1.10.1 and NeoMutt before 2018-07-16. They have a buffer overflow via base64 data.
Conclusion & alert: CVE-2018-14359 is rated High Risk (70.5/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 4.10%). Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-15 | 3.83% | 4.10% | +0.27% |
| 2 | 2026-02-23 | 4.27% | 3.83% | -0.44% |
| 3 | 2026-01-31 | — | 4.27% | — |
Full EPSS history (32 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2018-14359 not yet assigned priority: Debian including 2 source packages (mutt, neomutt), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. | https://security-tracker.debian.org/tracker/CVE-2018-14359 |
gentoo
|
normal | CVE-2018-14359: 1 GLSA(s) (201810-07), 2 atom(s) (mail-client/neomutt, net-client/mutt); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-14359 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2018-14359 |
suse
|
medium | CVE-2018-14359 severity moderate: SUSE including 23 source package names (mutt-1.10.1-3.3.4, mutt-1.10.1-55.6.1, …), 63 product×package rows across 36 product lines (Image SLES12-SP5-Azure-SAP-BYOS, Image SLES12-SP5-Azure-SAP-On-Demand, … (36 product lines)): Fixed 63. | https://www.suse.com/security/cve/CVE-2018-14359/ |
ubuntu
|
medium | CVE-2018-14359 medium priority: Ubuntu including 2 source packages (mutt, neomutt), 36 status rows across 18 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, trusty, upstream, xenial): released 19, not-affected 12, DNE 3, ignored 2. | https://ubuntu.com/security/CVE-2018-14359 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| mutt | mutt | < 1.10.1 | cpe:2.3:a:mutt:mutt:*:*:*:*:*:*:*:* |
| neomutt | neomutt | < 20180716 | cpe:2.3:a:neomutt:neomutt:*:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.mutt.org/news.html | Release Notes Vendor Advisory |
| https://github.com/neomutt/neomutt/commit/6f163e07ae68654d7ac5268cbb7565f6df79ad85 | Patch Third Party Advisory |
| https://gitlab.com/muttmua/mutt/commit/3d9028fec8f4d08db2251096307c0bbbebce669a | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2018/08/msg00001.html | Mailing List Third Party Advisory |
| https://neomutt.org/2018/07/16/release | Release Notes Vendor Advisory |
| https://security.gentoo.org/glsa/201810-07 | Third Party Advisory |
| https://usn.ubuntu.com/3719-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3719-2/ | Third Party Advisory |
| https://usn.ubuntu.com/3719-3/ | Third Party Advisory |
| https://www.debian.org/security/2018/dsa-4277 | Third Party Advisory |