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CVE-2025-67873

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Date: December 17, 2025

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.

Severity Score

Related Resources (4)

https://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3
https://nvd.nist.gov/vuln/detail/CVE-2025-67873
https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg
https://www.mend.io/vulnerability-database/CVE-2025-67873

Severity Score

Weakness Type (CWE)

Heap-based Buffer Overflow

CWE-122

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): LOW

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