CVE-2020-36205

Name: CVE-2020-36205
Creator: NVD / NIST
Published: 2021-01-26T18:15:55.707+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2020-36205 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An issue was discovered in the xcb crate through 2020-12-10 for Rust. base::Error does not have soundness. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

An issue was discovered in the xcb crate through 2020-12-10 for Rust. base::Error does not have soundness. Because of the public ptr field, a use-after-free or double-free can occur.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.40%

31.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Xcb Project	Xcb	<= 2020-12-10

References

https://rustsec.org/advisories/RUSTSEC-2020-0097.htmlExploit, Vendor Advisory
https://rustsec.org/advisories/RUSTSEC-2020-0097.htmlExploit, Vendor Advisory

Timeline

Published: Jan 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-36205?

An issue was discovered in the xcb crate through 2020-12-10 for Rust. base::Error does not have soundness. Because of the public ptr field, a use-after-free or double-free can occur.

How severe is CVE-2020-36205?

CVE-2020-36205 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2020-36205?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-36205?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST