What is CVE-2021-45687?

CVE-2021-45687 is a critical-severity vulnerability in Raw-Cpuid Project, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2021-12-27.

How severe is CVE-2021-45687?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Improper input validation in Raw-Cpuid Project

CVE-2021-45687

An issue was discovered in the raw-cpuid crate before 9.1.1 for Rust. If the serialize feature is used (which is not the the default), a Deserialize operation may lack sufficient validation, leading to memory corruption or a panic.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2021-12-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.1th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Raw-Cpuid Project

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

rustsec.org/advisories/RUSTSEC-2021-0089.html (Third Party Advisory)
raw.githubusercontent.com/rustsec/advisory-db/main/crates/raw-cpuid/RUSTSEC-202… (Third Party Advisory)

Frequently asked questions

What is CVE-2021-45687?: CVE-2021-45687 is a critical-severity vulnerability in Raw-Cpuid Project, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2021-12-27.
How severe is CVE-2021-45687?: Critical severity. CVSS v3 base score is 9.8 out of 10.