CVE-2025-67873
Capstone doesn't check Skipdata length, leading to cs_insn.bytes heap buffer overflow
- State
- Published
- Severity
- 4.8 Medium
- Published
- Dec 17, 2025
- Updated
- Dec 18, 2025
- Reserved
- Dec 12, 2025
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.8 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L | GitHub_M |
Weaknesses
- CWE-122 Heap-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
capstonecapstone-engine |
|
References
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.