CVE-2026-110602
mediumlibmspack through 0.11alpha contains an uninitialized pointer free vulnerability in kwajd_open() in mspack/kwajd.c that frees unzeroed filename and extra point…
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.
CVSS
6.3
6.3 (CVSS v3.1)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-10-14 15:17
Modified: 2026-10-16 19:18
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-10-27 07:02 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/kyz/libmspack/blob/v0.11alpha/libmspack/mspack/kwajd.c#L111-L181 disclosure@vulncheck.com
- https://github.com/kyz/libmspack/commit/4d868504114346aa767d435fbb89a8b76603493f disclosure@vulncheck.com
- https://hackmd.io/@haind-pwn/libmspack-kwaj-uninitialized-free disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/libmspack-through-0-11alpha-uninitialized-pointer-fre... disclosure@vulncheck.com
- https://hackmd.io/@haind-pwn/libmspack-kwaj-uninitialized-free 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:02 UTC · record ↗