CVE-2026-47143Capstone is a disassembly framework.
Updated under an hour ago ()
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It affects capstone-engine capstone. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.9 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
capstone-engine capstone capstone-engine:capstone | before 5.0.8; 6.0.0; 6.0.0; 6.0.0; 6.0.0; 6.0.0; 6.0.0; 6.0.0 | NVD |
References
- https://github.com/capstone-engine/capstone/commit/a0201371719b5aaa91d318ab2898843718f92d1fpatch
- https://github.com/capstone-engine/capstone/commit/fab595205fee206f5c21be6ed8ad2eaf9225f1c7patch
- https://github.com/capstone-engine/capstone/pull/2924issue-tracking, patch
- https://github.com/capstone-engine/capstone/security/advisories/GHSA-289w-cm54-fgrmexploit, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.