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CVE-2018-14353

30
FAUCET Score

CVE-2018-14353 is a critical integer underflow vulnerability (CWE-191) in the imap_quote_string function within imap/util.c, affecting Mutt before version 1.10.1 and NeoMutt before 2018-07-16. With a CVSS score of 9.8, this vulnerability allows for unauthenticated, low-complexity network attacks that can lead to complete compromise of confidentiality, integrity, and availability. While the FAUCET Risk Score is high at 81/100, there is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.10.1CPE matchmatch criteria
cpe:2.3:a:mutt:mutt:*:*:*:*:*:*:*:*
< 20180716CPE matchmatch criteria
cpe:2.3:a:neomutt:neomutt:*:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.70%
Probability of exploitation in next 30 days
EPSS Percentile
88.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0370 is in the 81st percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: mutt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: mutt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: mutt

Vendor Advisories (1)

redhatCVE-2018-14353Low

mutt: integer underflow in imap/util.c

Jul 17, 2018

References

github.com / neomutt/neomutt/commit/65d64a5b60a4a3883f2cd799d92c6091d8854f23
PatchThird Party Advisory
gitlab.com / muttmua/mutt/commit/e0131852c6059107939893016c8ff56b6e42865d
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2018/08/msg00001.html
Mailing ListThird Party Advisory
neomutt.org / 2018/07/16/release
Release NotesVendor Advisory
security.gentoo.org / glsa/201810-07
Third Party Advisory
usn.ubuntu.com / 3719-1
Third Party Advisory
usn.ubuntu.com / 3719-3
Third Party Advisory
debian.org / security/2018/dsa-4277
Third Party Advisory
mutt.org / news.html
Release NotesVendor Advisory