CVEvulnerability
CVE-2026-47143
5.9 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-07-21
- Last modified
- 2026-10-24
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.1 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.1 ([email protected])
- 5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-476
Description
Capstone is a disassembly framework. Versions prior to 6.0.0-Alpha8 and 5.0.8 have a NULL pointer dereference in `modRMRequired()` and `decode()` when disassembling 3DNow! opcodes (`0F 0F`) in builds compiled with `-DCAPSTONE_X86_REDUCE`, allowing a remote attacker to crash any application using the reduced X86 Capstone library by supplying a crafted input containing the 4-byte sequence `0F 0F <modrm> <imm8>`. Versions 6.0.0-Alpha8 and 5.0.8 patch the issue.
Affected configurations
• capstone-engine capstone (< 5.0.8)
• capstone-engine capstone 6.0.0
Related
Weakness · CWE (1)
- CWE-476 NULL Pointer Dereference weakness
References
- https://github.com/capstone-engine/capstone/commit/a0201371719b5aaa91d318ab2898843718f92d1f Patch
- https://github.com/capstone-engine/capstone/commit/fab595205fee206f5c21be6ed8ad2eaf9225f1c7 Patch
- https://github.com/capstone-engine/capstone/pull/2924 Issue Tracking, Patch
- https://github.com/capstone-engine/capstone/security/advisories/GHSA-289w-cm54-fgrm Exploit, Vendor Advisory
- https://github.com/capstone-engine/capstone/security/advisories/GHSA-289w-cm54-fgrm Exploit, Vendor Advisory