What’s Vulnerable › Vulnerabilities

CVE-2021-26307

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-29 · updated 2026-06-17

Description

An issue was discovered in the raw-cpuid crate before 9.0.0 for Rust. It allows __cpuid_count() calls even if the processor does not support the CPUID instruction, which is unsound and causes a deterministic crash.

Affected products

• Raw-Cpuid Project Raw-Cpuid: before 9.0.0 — fixed in 9.0.0

How to fix

Upgrade to a fixed version: Raw-Cpuid Project Raw-Cpuid 9.0.0. Check the vendor advisory for mitigations.

References

• https://rustsec.org/advisories/RUSTSEC-2021-0013.html
• https://rustsec.org/advisories/RUSTSEC-2021-0013.html

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