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CVE-2018-14681

29
FAUCET Score

CVE-2018-14681 is a high-severity vulnerability (CVSS 8.8) in libmspack, specifically within the kwajd_read_headers function in mspack/kwajd.c before version 0.7alpha. This flaw allows for a one or two-byte overwrite due to malformed KWAJ file header extensions, potentially leading to high impact on confidentiality, integrity, and availability. The vulnerability affects products like cabextract, canonical, debian, and redhat. Despite its severity, there is no evidence of active exploitation, public 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 2026-07-26
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

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-2018-14681Low

libmspack: out-of-bounds write in kwajd_read_headers in mspack/kwajd.c

Nov 26, 2017

References

access.redhat.com / errata/RHSA-2018:3327
Third Party Advisory
access.redhat.com / errata/RHSA-2018:3505
Third Party Advisory
bugs.debian.org / 904799
Issue TrackingMailing ListPatchThird Party Advisory
github.com / kyz/libmspack/commit/0b0ef9344255ff5acfac6b7af09198ac9c9756c8
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