What is CVE-2020-36434?

CVE-2020-36434 is a critical-severity vulnerability in Sys-Info Project, classified under Double Free. CVSS score: 9.8/10. Published 2021-08-08.

How severe is CVE-2020-36434?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Double Free in Sys-Info Project

CVE-2020-36434

An issue was discovered in the sys-info crate before 0.8.0 for Rust. sys_info::disk_info calls can trigger a double free.

Vulnerability class: Double Free

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

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (67.8th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Sys-Info Project

Weakness classification (CWE)

CWE-415 — Double Free

References

rustsec.org/advisories/RUSTSEC-2020-0100.html (Third Party Advisory)
raw.githubusercontent.com/rustsec/advisory-db/main/crates/sys-info/RUSTSEC-2020… (Third Party Advisory)

Frequently asked questions

What is CVE-2020-36434?: CVE-2020-36434 is a critical-severity vulnerability in Sys-Info Project, classified under Double Free. CVSS score: 9.8/10. Published 2021-08-08.
How severe is CVE-2020-36434?: Critical severity. CVSS v3 base score is 9.8 out of 10.