CVE-2021-24045

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CVSS 3.1

9.8 critical

EPSS

1%p67

Published

Dec 13, 2021 (Dec 13, 2021)

Modified

Jun 17, 2026

Description

A type confusion vulnerability could be triggered when resolving the "typeof" unary operator in Facebook Hermes prior to v0.10.0. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.

Vendors: facebook
Products: hermes
Weakness: CWE-843
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.2%)

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