What is CVE-2021-45681?

CVE-2021-45681 is a high-severity vulnerability in Derive-Com-Impl Project, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2021-12-27.

How severe is CVE-2021-45681?

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

Buffer overflow in Derive-Com-Impl Project

CVE-2021-45681

An issue was discovered in the derive-com-impl crate before 0.1.2 for Rust. An invalid reference (and memory corruption) can occur because AddRef might not be called before returning a pointer.

Vulnerability class: Buffer Overflow

Published 2021-12-27 · 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 (63.2th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.2% 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

Derive-Com-Impl Project

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

rustsec.org/advisories/RUSTSEC-2021-0083.html (Third Party Advisory)
raw.githubusercontent.com/rustsec/advisory-db/main/crates/derive-com-impl/RUSTS… (Third Party Advisory)

Frequently asked questions

What is CVE-2021-45681?: CVE-2021-45681 is a high-severity vulnerability in Derive-Com-Impl Project, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2021-12-27.
How severe is CVE-2021-45681?: High severity. CVSS v3 base score is 7.5 out of 10.