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CVE-2021-38192

24
FAUCET Score

CVE-2021-38192 is a high-severity overflow vulnerability affecting the prost-types crate in Rust, specifically versions prior to 0.8.0. This flaw occurs during the conversion of a Timestamp to SystemTime, potentially leading to a denial-of-service condition. The vulnerability has a CVSS score of 7.5, indicating it can be exploited remotely with low complexity and without user interaction, resulting in high availability impact. Despite its severity, there is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.8.0CPE matchmatch criteria
cpe:2.3:a:prost_project:prost:*:*:*:*:*: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
1.10%
Probability of exploitation in next 30 days
EPSS Percentile
62.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0110 is in the 40th percentile among its peer group of 51,506 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: prost-typesFixed in: 0.8.0

Vendor Advisories (1)

rustGHSA-x4qm-mcjq-v2gfhigh

Overflow in prost-types

Aug 25, 2021

References

raw.githubusercontent.com / rustsec/advisory-db/main/crates/prost-types/RUSTSEC-2021-0073.md
Third Party Advisory
rustsec.org / advisories/RUSTSEC-2021-0073.html
ExploitIssue TrackingPatchThird Party Advisory