Is CVE-2020-36317 actively exploited?

No active exploitation of CVE-2020-36317 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-36317 be exploited remotely?

Yes. CVE-2020-36317 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-36317?

CVE-2020-36317 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2020-36317

CWE-787Published: April 11, 2021· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

In the standard library in Rust before 1.49.0, String::retain() function has a panic safety problem. It allows creation of a non-UTF-8 Rust string when the provided closure panics. This bug could result in a memory safety violation when other string APIs assume that UTF-8 encoding is used on the same string.

NVD Source

Technical Analysis

CVE-2020-36317 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.