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.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-25)

CWE

CWE-122

Published

2025-12-17

Modified

2026-10-13

Record from

the NVD, synced 2026-10-19

Affected

• capstone-engine:capstone

References

• https://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3
• https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg
• https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg

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