Vulnerability Description
Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's public `cs_insn_name()` API forwards caller-supplied instruction IDs directly to the selected architecture backend. Most backends validate the ID before indexing instruction-name tables, but the M68K and RISCV backends have missing or incomplete bounds checks. On a Capstone handle opened for M68K or RISCV, a caller-controlled invalid instruction ID can trigger an out-of-bounds read and crash the process. The demonstrated impact is availability loss in applications or bindings that expose instruction-name lookup to untrusted IDs. No code execution or data disclosure was demonstrated. Version 6.0.0-Alpha9 patches the issue.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/capstone-engine/capstone/blob/251c5bb4bc9bb92973e738ae3c5f4ef
- https://github.com/capstone-engine/capstone/security/advisories/GHSA-jrw4-wj52-2
- https://github.com/capstone-engine/capstone/security/advisories/GHSA-jrw4-wj52-2
FAQ
What is CVE-2026-49282?
CVE-2026-49282 is a vulnerability with a CVSS score of 5.1 (MEDIUM). Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's public `cs_insn_name()` API forwards caller-supplied instruction IDs directly to the selected architecture backend. Most ...
How severe is CVE-2026-49282?
CVE-2026-49282 has been rated MEDIUM with a CVSS base score of 5.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-49282?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.