CVE-2026-47143
Medium · 5.1CVSS
5.1
EPSS
0.5%
Published
Jul 21, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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