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CVE-2021-45680

24
FAUCET Score

CVE-2021-45680 is a memory corruption vulnerability affecting the vec-const crate for Rust, specifically versions prior to 2.0.0. This flaw arises from an attempt to construct a mutable Vec from a pointer to a constant slice. It carries a CVSS score of 7.5 (High), indicating that it can be exploited remotely with low attack complexity, leading to high availability impact (denial of service) without requiring user interaction or privileges. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.0.0CPE matchmatch criteria
cpe:2.3:a:vec-const_project:vec-const:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.05%
Probability of exploitation in next 30 days
EPSS Percentile
60.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0105 is in the 38th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

rustpatch availablevia ghsa
Product: vec-constFixed in: 2.0.0

Vendor Advisories (1)

rustGHSA-x76r-966h-5qv9high

Out-of-bounds Write in vec-const

Jan 6, 2022

References

raw.githubusercontent.com / rustsec/advisory-db/main/crates/vec-const/RUSTSEC-2021-0082.md
Third Party Advisory
rustsec.org / advisories/RUSTSEC-2021-0082.html
Third Party Advisory