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.
Published: 2026-10-14
Score: 5.8 Medium
EPSS: n/a
KEV: No
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Remediation

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Advisories

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History

Wed, 14 Oct 2026 14:30:00 +0000

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'}

Subscriptions

Libmspack Project Libmspack
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-14T14:16:43.661Z

Reserved: 2026-10-14T13:07:20.909Z

Link: CVE-2026-110602

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-824

    Access of Uninitialized Pointer