Vulnerability DatabaseCVE-2026-110602
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CVE-2026-110602
Published:October 14, 2026
Updated:October 15, 2026
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.
Related Resources (8)
https://hackmd.io/@haind-pwn/libmspack-kwaj-uninitialized-free
https://github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-110602
https://www.vulncheck.com/advisories/libmspack-through-0-11alpha-uninitialized-pointer-free-via-kwajd-open-error-path
https://github.com/kyz/libmspack/blob/v0.11alpha/libmspack/mspack/kwajd.c#L111-L181
https://github.com/kyz/libmspack
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110602.json
https://github.com/kyz/libmspack/commit/4d868504114346aa767d435fbb89a8b76603493f
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CVSS v4
Base Score:
5.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Access of Uninitialized Pointer
CWE-824
EPSS
Base Score:
0.24