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    CVE-2025-67873

    Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue.

    Published:Dec 17, 2025
    Last Modified:Jan 2, 2026
    EPS:Dec 17, 2025
    EPSS Score:0.00013
    CVSS Score:4.8

    Affected Products

    Vendor
    Capstone-engine
    Product
    Capstone

    Exploits

    https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jghttps://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg

    Common Weakness Enumeration

    CWE-122 Heap-based Buffer Overflow

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-55893 (CVSS 7.3) — Capstone is a disassembly framework. In 6.0.0-Alpha9 and earlier, Capstone's arch/SH/SHDisassembler.c SH float…
    CVE-2026-55894 (CVSS 6.8) — Capstone is a disassembly framework. In 6.0.0-Alpha9 and earlier, Capstone's arch/SH/SHDisassembler.c sh_disas…
    CVE-2026-49263 (CVSS 2) — Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's WebAssembly backend accepts att…
    CVE-2026-49282 (CVSS 5.1) — Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's public `cs_insn_name()` API for…
    CVE-2026-47143 (CVSS 5.1) — Capstone is a disassembly framework. Versions prior to 6.0.0-Alpha8 and 5.0.8 have a NULL pointer dereference …
    CVE-2025-68114 (CVSS 4.8) — Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, an unchecked vsnprintf return in SStr…
    CVE-2016-7151 (CVSS 5.5) — Capstone 3.0.4 has an out-of-bounds vulnerability (SEGV caused by a read memory access) in X86_insn_reg_intel …
    CVE-2017-6952 (CVSS 8.8) — Integer overflow in the cs_winkernel_malloc function in winkernel_mm.c in Capstone 3.0.4 and earlier allows at…

    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