CVE-2026-110602

libmspack through 0.11alpha Uninitialized Pointer Free via kwajd_open Error Path

Published Oct 14, 2026 CVSS 4.0 · 5.8 Medium EPSS < 1% KEV · Not listed
Description
libmspack through 0.11alpha contains an uninitialized pointer free vulnerability in kwajd_open() in mspack/kwajd.c that frees unzeroed filename and extra pointers on header read errors. Attackers can supply a truncated, empty, or wrong-signature KWAJ file to crash the process or obtain an arbitrary-free memory corruption primitive.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Ubuntu USN Ubuntu USN USN-8973-1 libmspack vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description libmspack through 0.11alpha contains an uninitialized pointer free vulnerability in kwajd_open() in mspack/kwajd.c that frees unzeroed filename and extra pointers on header read errors. Attackers can supply a truncated, empty, or wrong-signature KWAJ file to crash the process or obtain an arbitrary-free memory corruption primitive.
Title libmspack through 0.11alpha Uninitialized Pointer Free via kwajd_open Error Path
First Time appeared Libmspack Project
Libmspack Project libmspack
Weaknesses CWE-824
CPEs cpe:2.3:a:libmspack_project:libmspack:*:*:*:*:*:*:*:*
Vendors & Products Libmspack Project
Libmspack Project libmspack
References
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H'}

cvssV4_0

{'score': 5.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 14, 2026, 6:01 PM
Reserved
Oct 14, 2026, 1:07 PM
Status
Deferred
Published
Oct 14, 2026, 3:17 PM
Modified
Oct 16, 2026, 7:18 PM
Severity
Moderate
Public date
Oct 14, 2026, 2:16 PM