HOMEVULNERABILITIESCVE-2021-45687
CRITICAL

CVE-2021-45687

CWE-20Published: December 27, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-45687 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

raw-cpuid_project1 product(s)
raw-cpuid
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://raw.githubusercontent.com/rustsec/advisory-db/main/crates/raw-cpuid/RUSTSEC-2021-0089.md
ADVISORYhttps://rustsec.org/advisories/RUSTSEC-2021-0089.html
ADVISORYhttps://raw.githubusercontent.com/rustsec/advisory-db/main/crates/raw-cpuid/RUSTSEC-2021-0089.md
ADVISORYhttps://rustsec.org/advisories/RUSTSEC-2021-0089.html

All References (4)

→
https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/raw-cpuid/RUSTSEC-2021-0089.mdThird Party Advisory
→
https://rustsec.org/advisories/RUSTSEC-2021-0089.htmlThird Party Advisory
→
https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/raw-cpuid/RUSTSEC-2021-0089.mdThird Party Advisory
→
https://rustsec.org/advisories/RUSTSEC-2021-0089.htmlThird Party Advisory

Quick Facts

CVE IDCVE-2021-45687
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-20
CISA KEVNo
Affected1 vendor(s)
PublishedDec 27, 2021

Related CVEs (CWE-20)

CVE-2020-12389
10.0
CVE-2009-0545
10.0
CVE-2020-6962
10.0
CVE-2020-12388
10.0
CVE-2021-21321
10.0
CVE-2008-4910
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-45687 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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