Is CVE-2021-24044 actively exploited?

No active exploitation of CVE-2021-24044 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-24044 be exploited remotely?

Yes. CVE-2021-24044 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-24044?

CVE-2021-24044 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-24044

CWE-843Published: January 15, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

By passing invalid javascript code where await and yield were called upon non-async and non-generator getter/setter functions, Hermes would invoke generator functions and error out on invalid await/yield positions. This could result in segmentation fault as a consequence of type confusion error, with a low chance of RCE. This issue affects Hermes versions prior to v0.10.0.

NVD Source

Technical Analysis

CVE-2021-24044 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.