What’s Vulnerable › Vulnerabilities

CVE-2018-14358

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-07-17 · updated 2026-06-17
• Weakness: CWE-787

Description

An issue was discovered in Mutt before 1.10.1 and NeoMutt before 2018-07-16. imap/message.c has a stack-based buffer overflow for a FETCH response with a long RFC822.SIZE field.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04
• Debian Linux: 8.0, 9.0
• mutt: before 1.10.1 — fixed in 1.10.1
• Neomutt: before 20180716 — fixed in 20180716

How to fix

Upgrade to a fixed version: mutt 1.10.1; Neomutt 20180716. Check the vendor advisory for mitigations.

References

• http://www.mutt.org/news.html
• https://github.com/neomutt/neomutt/commit/1b0f0d0988e6df4e32e9f4bf8780846ea95d4485
• https://gitlab.com/muttmua/mutt/commit/3287534daa3beac68e2e83ca4b4fe8a3148ff870
• https://lists.debian.org/debian-lts-announce/2018/08/msg00001.html
• https://neomutt.org/2018/07/16/release
• https://security.gentoo.org/glsa/201810-07
• https://usn.ubuntu.com/3719-1/
• https://usn.ubuntu.com/3719-3/
• https://www.debian.org/security/2018/dsa-4277
• http://www.mutt.org/news.html
• https://github.com/neomutt/neomutt/commit/1b0f0d0988e6df4e32e9f4bf8780846ea95d4485
• https://gitlab.com/muttmua/mutt/commit/3287534daa3beac68e2e83ca4b4fe8a3148ff870

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