Vulnerability Report

CVE-2020-35906

Title: Use-after-free in futures_task::waker for Rust

Use-after-free

Proof Of Concept

No public PoC currently indexed for CVE-2020-35906.

CWE Category CWE-416

Published Date Dec 31, 2020

Modified Date Oct 30, 2025

Exploit Status Not Found

Score 7.8 CVSS v3.1

Exploit Probability (EPSS)

0.05%

Vulnerability Summary

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.

Impacted Vendors

rust-lang 1

Reference Links

https://rustsec.org/advisories/RUSTSEC-2020-0060.html https://rustsec.org/advisories/RUSTSEC-2020-0060.html

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.8

Attack Vector

LOCAL

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

CVSS v2.0

Source Entity [email protected]

Severity HIGH

7.2

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:L/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-35906 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

October 30, 2025 MODIFIED

Vulnerability data or affected products updated.

December 31, 2020 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.