Soundness issue in raw-cpuid

published 2021-01-20 5 y ago modified 2026-06-17 4 mo ago also CVE-2021-26307 , GHSA-hvqc-pc78-x9wh , GHSA-jrf8-cmgg-gv2m , RUSTSEC-2021-0013 , EUVD-2021-1761

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits: 0; none known

An issue was discovered in the raw-cpuid crate before 9.0.0 for Rust. It has unsound transmute calls within as_string() methods.

Patch / fix

fixed in 2 links 1

crates.io raw-cpuid 9.0.0
raw-cpuid_project raw-cpuid 9.0.0

github.com/gz/rust-cpuid@91b676e commit

Exploit prediction

1.28% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
crates.io	raw-cpuid	<9.0.0 >=0.0.0-0, <9.0.0	9.0.0

Classification

Weakness

CWE-198 Use of Incorrect Byte Ordering
CWE-400 Uncontrolled Resource Consumption
CWE-657 Violation of Secure Design Principles

References

github.com /gz/rust-cpuid/commit/91b676eecd01f2163e2984215e2c0ac89e30ce75
web
rustsec.org /advisories/RUSTSEC-2021-0013.html
web, vendor-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2021-26306
advisory
github.com /gz/rust-cpuid/issues/40
web
github.com /RustSec/advisory-db/pull/614
web
github.com /gz/rust-cpuid
package
nvd.nist.gov /vuln/detail/CVE-2021-26307
advisory
github.com /gz/rust-cpuid/issues/41
web
crates.io /crates/raw-cpuid
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary