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    CVE-2026-110602

    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:Oct 14, 2026
    Last Modified:Oct 15, 2026
    EPS:Oct 14, 2026
    EPSS Score:0.00235
    CVSS Score:6.3

    Affected Products

    Vendor
    Libmspack Project
    Product
    Libmspack

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2018-18584 (CVSS 6.5) — In mspack/cab.h in libmspack before 0.8alpha and cabextract before 1.8, the CAB block input buffer is one byte…
    CVE-2017-11423 (CVSS 5.5) — The cabd_read_string function in mspack/cabd.c in libmspack 0.5alpha, as used in ClamAV 0.99.2 and other produ…
    CVE-2017-6419 (CVSS 7.8) — mspack/lzxd.c in libmspack 0.5alpha, as used in ClamAV 0.99.2, allows remote attackers to cause a denial of se…
    CVE-2014-9732 (CVSS 4.3) — The cabd_extract function in cabd.c in libmspack before 0.5 does not properly maintain decompression callbacks…
    CVE-2015-4470 (CVSS 4.3) — Off-by-one error in the inflate function in mszipd.c in libmspack before 0.5 allows remote attackers to cause …
    CVE-2015-4471 (CVSS 4.3) — Off-by-one error in the lzxd_decompress function in lzxd.c in libmspack before 0.5 allows remote attackers to …
    CVE-2015-4469 (CVSS 4.3) — The chmd_read_headers function in chmd.c in libmspack before 0.5 does not validate name lengths, which allows …
    CVE-2015-4472 (CVSS 6.8) — Off-by-one error in the READ_ENCINT macro in chmd.c in libmspack before 0.5 allows remote attackers to cause a…
    CVE-2015-4467 (CVSS 4.3) — The chmd_init_decomp function in chmd.c in libmspack before 0.5 does not properly validate the reset interval,…
    CVE-2015-4468 (CVSS 4.3) — Multiple integer overflows in the search_chunk function in chmd.c in libmspack before 0.5 allow remote attacke…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-110602 — Libmspack_Project (Medium 5.8) | CVE-DB