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CVE-2021-24045

nvd nist
Published: Dec 13, 2021Modified: Jun 17, 2026

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9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 5.9
Source: NVD

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.

Affected (1)

Products: Facebook: Hermes
Facebook
1 product
Hermes
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Hermes
Before 0.10.0

Related CWEs

CWE-843
Access of Resource Using Incompatible Type ('Type Confusion')
The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

References (4)

Source: cve-assign@fb.com
PatchThird Party Advisory
Source: cve-assign@fb.com
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

Timeline

No history available yet.