# CVE-2026-49282

## Summary

- **CVE ID:** CVE-2026-49282
- **Severity:** MEDIUM
- **CVSS Score:** 5.1 (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L)
- **CWE:** CWE-125, CWE-129, CWE-191
- **Published:** Aug 14, 2026
- **Last Modified:** Aug 17, 2026

## 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.

## Affected Products

- capstone-engine — capstone (< 6.0.0-Alpha9)

## References

- [CNA](https://github.com/capstone-engine/capstone/security/advisories/GHSA-jrw4-wj52-2vw8)
- [CNA](https://github.com/capstone-engine/capstone/blob/251c5bb4bc9bb92973e738ae3c5f4ef86f103356/ChangeLog#L102)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.13%
- **EPSS Percentile:** 3.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._