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Not in CISA KEV
CRITICAL severity

Deserialization of Untrusted Data in rust-cpuidGHSA-w428-f65r-h4q2

CRITICAL

GHSA-w428-f65r-h4q2 is a critical-severity (CVSS 9.8) Improper Input Validation vulnerability in raw-cpuid. A fix is available for raw-cpuid — see the affected versions and patch details below.

Also known asCVE-2021-45687GHSA-jf5h-cf95-w759RUSTSEC-2021-0089
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.2%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs67th percentile — riskier than 67% of all scored CVEsHighest risk
0.00%0.55%1.11%1.66%0.4%1.2%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🦀raw-cpuid

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.ioraw-cpuid≥ 3.1.0&&< 9.1.19.1.1cargo update -p raw-cpuid --precise 9.1.1

Affected Products

1 product · 1 configurations
Application
raw-cpuidraw-cpuid_project
< 9.1.1
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for raw-cpuid, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update raw-cpuid to 9.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-w428-f65r-h4q2 is resolved across your whole dependency graph.

  3. Workarounds

    Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Frequently Asked Questions

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.
O3 Security · Impact-Aware SCA

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Deserialization of Untrusted Data in rust-cpuid (Critical 9.8)