CVE-2023-25933

Published: May 18, 2023Modified: Jun 17, 2026

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 bug in TypedArray prior to commit e6ed9c1a4b02dc219de1648f44cd808a56171b81 could have been used by a malicious attacker to execute arbitrary code via untrusted JavaScript. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

Affected (1)

Products: Facebook: Hermes

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Facebook Hermes	All versions

Related CWEs

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)

https://github.com/facebook/hermes/commit/e6ed9c1a4b02dc219de1648f44cd808a56171b81

Source: cve-assign@fb.com

Patch

https://www.facebook.com/security/advisories/cve-2023-25933

Source: cve-assign@fb.com

PatchVendor Advisory

https://github.com/facebook/hermes/commit/e6ed9c1a4b02dc219de1648f44cd808a56171b81

Source: af854a3a-2127-422b-91ae-364da2661108

Patch

https://www.facebook.com/security/advisories/cve-2023-25933

Source: af854a3a-2127-422b-91ae-364da2661108

PatchVendor Advisory

Timeline

No history available yet.