Is CVE-2020-35898 actively exploited?

No active exploitation of CVE-2020-35898 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-35898 be exploited remotely?

Yes. CVE-2020-35898 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-35898?

CVE-2020-35898 has a CVSS score of 9.1 (CRITICAL).

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CRITICAL

CVE-2020-35898

CWE-416Published: December 31, 2020· Updated: Jun 17, 2026

9.1

CVSS v3.1

Official Description

An issue was discovered in the actix-utils crate before 2.0.0 for Rust. The Cell implementation allows obtaining more than one mutable reference to the same data.

NVD Source

Technical Analysis

CVE-2020-35898 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 full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.1.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.