NULL pointer dereference in Capstone-engine Capstone
CVE-2026-47143
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`…
CVSS v3 metric
CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Capstone-engine Capstone — versions < 5.0.8, < 6.0.0-Alpha8
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-47143?
- CVE-2026-47143 is a medium-severity vulnerability in Capstone-engine Capstone, classified under NULL Pointer Dereference. CVSS score: 5.1/10. Published 2026-07-21.
- How severe is CVE-2026-47143?
- Medium severity. CVSS v3 base score is 5.1 out of 10.