CVE-2025-67873: Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a…
CVE-2025-67873 · Severity: medium · CVSS 4.8 · Published 2025-12-17
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-67873 being exploited in the wild.
How severe is CVE-2025-67873?
Medium severity, with a CVSS score of 4.8, published 17 December 2025.
Which products and versions are affected?
Capstone Engine Capstone. The advisory does not name versions.
Is there a fix for CVE-2025-67873?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-67873?
Check whether you run Capstone Engine Capstone. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.