CVE-2020-35906

Name: CVE-2020-35906
Creator: NVD / NIST
Published: 2020-12-31T09:15:15.177+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.49%

Last modified Jun 17, 2026

CVE-2020-35906 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An issue was discovered in the futures-task crate before 0.3.6 for Rust. futures_task::waker may cause a use-after-free in a non-static type situation.. EPSS estimates a 0.49% chance of exploitation in the next 30 days.

Description

An issue was discovered in the futures-task crate before 0.3.6 for Rust. futures_task::waker may cause a use-after-free in a non-static type situation.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.49%

38.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Rust-Lang	Futures-Task	>= 0.2.1, < 0.3.6

References

https://rustsec.org/advisories/RUSTSEC-2020-0060.htmlExploit, Patch, Third Party Advisory
https://rustsec.org/advisories/RUSTSEC-2020-0060.htmlExploit, Patch, Third Party Advisory

Timeline

Published: Dec 31, 2020
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2020-35906?

An issue was discovered in the futures-task crate before 0.3.6 for Rust. futures_task::waker may cause a use-after-free in a non-static type situation.

How severe is CVE-2020-35906?

CVE-2020-35906 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35906?

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-2020-35906?

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

Scan your code now

Source: NVD / NIST