CVE-2025-67873: Capstone-Engine Capstone

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Capstone-Engine Capstone: before 6.0.0 (fixed in 6.0.0); version 6.0.0 only

Published 2025-12-17. Last modified 2026-06-17.