CVE-2026-110602
MEDIUM
CVSS 6.3
Published: 2026-10-14
Modified: 2026-10-14
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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.
Quick Facts
| CVE ID | CVE-2026-110602 |
| CVSS Score | 6.3 |
| Vector | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H |
| Published | 2026-10-14 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/kyz/libmspack/blob/v0.11alpha/libmspack/m…
- https://github.com/kyz/libmspack/commit/4d868504114346aa767d…
- https://hackmd.io/@haind-pwn/libmspack-kwaj-uninitialized-fr…
- https://www.vulncheck.com/advisories/libmspack-through-0-11a…
- https://hackmd.io/@haind-pwn/libmspack-kwaj-uninitialized-fr…