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CVE-2020-35928

17
FAUCET Score

CVE-2020-35928 describes a data race vulnerability in the concread crate for Rust, specifically affecting versions prior to 0.2.6. This medium-severity flaw (CVSS 4.7) allows attackers to cause a denial of service by sending non-Send/Sync types to an ARCache<K,V> object. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.2.6CPE matchmatch criteria
cpe:2.3:a:concread_project:concread:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 58th percentile among its peer group of 1,297 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

rustpatch availablevia ghsa
Product: concreadFixed in: 0.2.6

Vendor Advisories (1)

rustGHSA-4xj5-vv9x-63jpmedium

Data races in concread

Aug 25, 2021

References

rustsec.org / advisories/RUSTSEC-2020-0092.html
ExploitThird Party Advisory