CVE-2021-45687
Optional `Deserialize` implementations lacking validation
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-45687- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-45687- Updated
- 2026-11-02
EUVDEUVD-2022-0714 No score
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.
- Record
EUVD-2022-0714- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w428-f65r-h4q2
Deserialization of Untrusted Data in rust-cpuid
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.
- Record
GHSA-w428-f65r-h4q2- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-jf5h-cf95-w759 No score
Optional `Deserialize` implementations lacking validation
When activating the non-default feature serialize, most structs implement
serde::Deserialize without sufficient validation. This allows breaking
invariants in safe code, leading to:
- Undefined behavior in
as_string()methods (which usestd::str::from_utf8_unchecked()internally). - Panics due to failed assertions.
- Record
GHSA-jf5h-cf95-w759- Updated
- 2026-11-02
OSVGHSA-w428-f65r-h4q2
Deserialization of Untrusted Data in rust-cpuid
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.
- Record
GHSA-w428-f65r-h4q2- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
OSVGHSA-jf5h-cf95-w759 No score
Optional `Deserialize` implementations lacking validation
When activating the non-default feature serialize, most structs implement
serde::Deserialize without sufficient validation. This allows breaking
invariants in safe code, leading to:
- Undefined behavior in
as_string()methods (which usestd::str::from_utf8_unchecked()internally). - Panics due to failed assertions.
- Record
GHSA-jf5h-cf95-w759- Updated
- 2026-11-02
OSVRUSTSEC-2021-0089 No score
Optional `Deserialize` implementations lacking validation
When activating the non-default feature serialize, most structs implement
serde::Deserialize without sufficient validation. This allows breaking
invariants in safe code, leading to:
- Undefined behavior in
as_string()methods (which usestd::str::from_utf8_unchecked()internally). - Panics due to failed assertions.
- Record
RUSTSEC-2021-0089- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-45687 is a critical vulnerability (CVSS 9.8) in Raw-cpuid Project Raw-cpuid, published January 20, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.16%, the 67th percentile. Fixed in raw-cpuid 9.1.1.
References
rustsec.org/advisories/RUSTSEC-2021-0089.html
raw.githubusercontent.com/rustsec/advisory-db/main/crates/raw-cpuid/RUSTSEC-2021-0089.md
github.com/gz/rust-cpuid/issues/43
nvd.nist.gov/vuln/detail/CVE-2021-45687
crates.io/crates/raw-cpuid