What is CVE-2021-28030?

CVE-2021-28030 is a high-severity vulnerability in Truetype Project, classified under Use of Uninitialized Resource. CVSS score: 7.5/10. Published 2021-03-05.

How severe is CVE-2021-28030?

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

Vulnerability in Truetype Project

CVE-2021-28030

An issue was discovered in the truetype crate before 0.30.1 for Rust. Attackers can read the contents of uninitialized memory locations via a user-provided Read operation within Tape::take_bytes.

Published 2021-03-05 · 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:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.012 (66.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.3% 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: 0.012 · change: +0.001

Affected products

Truetype Project

Weakness classification (CWE)

CWE-908 — Use of Uninitialized Resource

References

rustsec.org/advisories/RUSTSEC-2021-0029.html (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-28030?: CVE-2021-28030 is a high-severity vulnerability in Truetype Project, classified under Use of Uninitialized Resource. CVSS score: 7.5/10. Published 2021-03-05.
How severe is CVE-2021-28030?: High severity. CVSS v3 base score is 7.5 out of 10.