CVE-2026-49282
MediumCVSS 5.1Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
In Capstone before version 6.0.0-Alpha9, the public cs_insn_name() API forwards instruction IDs to M68K and RISCV backends without proper bounds checks, potentially causing an out-of-bounds read and process crash.
Risk Assessment
Risk of denial of service in applications using Capstone that process untrusted instruction IDs.
Recommendation
Upgrade to version 6.0.0-Alpha9 or later, which includes the fix.
Original NVD description (English source)
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.