What’s Vulnerable › Vulnerabilities

CVE-2018-14357

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.0% 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-78

Description

An issue was discovered in Mutt before 1.10.1 and NeoMutt before 2018-07-16. They allow remote IMAP servers to execute arbitrary commands via backquote characters, related to the mailboxes command associated with an automatic subscription.

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
• RedHat Enterprise Linux Desktop: 6.0, 7.0
• RedHat Enterprise Linux Server: 6.0, 7.0
• RedHat Enterprise Linux Server Aus: 7.6, 7.7
• RedHat Enterprise Linux Server Eus: 7.5, 7.6, 7.7
• RedHat Enterprise Linux Server Tus: 7.6, 7.7
• RedHat Enterprise Linux Workstation: 6.0, 7.0

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://access.redhat.com/errata/RHSA-2018:2526
• https://github.com/neomutt/neomutt/commit/e52393740334443ae0206cab2d7caef381646725
• https://gitlab.com/muttmua/mutt/commit/185152818541f5cdc059cbff3f3e8b654fc27c1d
• 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://access.redhat.com/errata/RHSA-2018:2526

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