CVE-2026-47143
5.1 · MEDIUMOverview
CVE-2026-47143 is a medium-severity vulnerability affecting capstone-engine capstone. It was published on July 21, 2026 and has a CVSS 3.1 base score of 5.1 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.1, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from capstone-engine. Update capstone to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| capstone-engine | capstone | >= 0, < 5.0.8 | Affected |
References
Frequently Asked Questions
What is CVE-2026-47143?
CVE-2026-47143 is a medium-severity vulnerability affecting capstone-engine capstone. It was published on July 21, 2026 and has a CVSS 3.1 base score of 5.1 (MEDIUM).
How severe is CVE-2026-47143?
This vulnerability has a CVSS 3.1 base score of 5.1, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-47143?
Check the references section for vendor advisories and patches from capstone-engine. Update capstone to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-47143?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-47143 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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