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CVE-2018-14682

23
FAUCET Score

CVE-2018-14682 describes an off-by-one error in the TOLOWER() macro within the mspack/chmd.c component of libmspack before version 0.7alpha, impacting products like cabextract, Canonical, Debian, and Red Hat. This vulnerability carries a high CVSS score of 8.8, indicating a critical risk due to its network-based attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability compromise, though user interaction is required. Despite its severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
0.0.20060920CPE matchmatch criteria
cpe:2.3:a:cabextract:libmspack:0.0.20060920:alpha:*:*:*:*:*:*
0.3CPE matchmatch criteria
cpe:2.3:a:cabextract:libmspack:0.3:alpha:*:*:*:*:*:*
0.4CPE matchmatch criteria
cpe:2.3:a:cabextract:libmspack:0.4:alpha:*:*:*:*:*:*
0.5CPE matchmatch criteria
cpe:2.3:a:cabextract:libmspack:0.5:alpha:*:*:*:*:*:*
0.6CPE matchmatch criteria
cpe:2.3:a:cabextract:libmspack:0.6:alpha:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.81%
Probability of exploitation in next 30 days
EPSS Percentile
88.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0381 is in the 88th percentile among its peer group of 14,848 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libmspack-0:0.5-0.6.alpha.el7
View patch

Vendor Advisories (1)

redhatCVE-2018-14682Low

libmspack: off-by-one error in the TOLOWER() macro for CHM decompression

Feb 6, 2018

References

access.redhat.com / errata/RHSA-2018:3327
Third Party Advisory
access.redhat.com / errata/RHSA-2018:3505
Third Party Advisory
bugs.debian.org / 904800
Issue TrackingMailing ListPatchThird Party Advisory
github.com / kyz/libmspack/commit/4fd9ccaa54e1aebde1e4b95fb0163b699fd7bcc8
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2018/08/msg00007.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201903-20
Third Party Advisory
usn.ubuntu.com / 3728-1
Third Party Advisory
usn.ubuntu.com / 3728-2
Third Party Advisory
usn.ubuntu.com / 3728-3
Third Party Advisory
usn.ubuntu.com / 3789-2
Third Party Advisory
debian.org / security/2018/dsa-4260
Third Party Advisory
openwall.com / lists/oss-security/2018/07/26/1
Mailing ListThird Party Advisory
securitytracker.com / id/1041410
Third Party AdvisoryVDB Entry