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CVE-2021-28037

29
FAUCET Score

CVE-2021-28037 is a critical data race vulnerability in the internment crate for Rust, affecting versions prior to 0.4.2. This flaw, stemming from an unconditional Sync implementation for Intern<T>, can lead to memory corruption. With a CVSS score of 9.8, it presents a severe risk (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), allowing unauthenticated attackers to achieve high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.4.2CPE matchmatch criteria
cpe:2.3:a:internment_project:internment:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.17%
Probability of exploitation in next 30 days
EPSS Percentile
64.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0117 is in the 50th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

rustpatch availablevia ghsa
Product: internmentFixed in: 0.4.2

Vendor Advisories (1)

rustGHSA-gppw-3h6h-v6q2critical

Data race in internment

Aug 25, 2021

References

rustsec.org / advisories/RUSTSEC-2021-0036.html
PatchThird Party Advisory