What is CVE-2021-38192?

CVE-2021-38192 is a high-severity vulnerability in Prost Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2021-08-08.

How severe is CVE-2021-38192?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Prost Project

CVE-2021-38192

An issue was discovered in the prost-types crate before 0.8.0 for Rust. An overflow can occur during conversion from Timestamp to SystemTime.

Vulnerability class: Buffer Overflow

Published 2021-08-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.011 (64.5th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Prost Project

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

rustsec.org/advisories/RUSTSEC-2021-0073.html (Exploit, Patch, Third Party Advisory, Issue Tracking)
raw.githubusercontent.com/rustsec/advisory-db/main/crates/prost-types/RUSTSEC-2… (Third Party Advisory)

Frequently asked questions

What is CVE-2021-38192?: CVE-2021-38192 is a high-severity vulnerability in Prost Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2021-08-08.
How severe is CVE-2021-38192?: High severity. CVSS v3 base score is 7.5 out of 10.