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Vulnerability record · CVE-2017-20004 · published 14 April 2021

CVE-2017-20004: Rust-lang rust race condition vulnerability

Rust Lang · Rust

In the standard library in Rust before 1.19.0, there is a synchronization problem in the MutexGuard object. MutexGuards can be used across threads with any types, allowing for memory safety issues through race conditions.

5.9 CVSS 3.1 Medium EPSS 0.80% · top 45.2% CWE-362 · Race condition
5.9CVSS 3.1 base score, v2 4.3
0.80%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

In the standard library in Rust before 1.19.0, there is a synchronization problem in the MutexGuard object. MutexGuards can be used across threads with any types, allowing for memory safety issues through race conditions.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/rust-lang/rust/issues/41622 PatchThird Party Advisory
https://github.com/rust-lang/rust/pull/41624 PatchThird Party Advisory
https://github.com/rust-lang/rust/issues/41622 PatchThird Party Advisory
https://github.com/rust-lang/rust/pull/41624 PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2017-20004), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.