CVE-2022-40138

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

An integer conversion error in Hermes bytecode generation, prior to commit 6aa825e480d48127b480b08d13adf70033237097, could have been used to perform Out-Of-Bounds operations and subsequently execute arbitrary code. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-681

Affected software

No affected versions have been published.

Timeline

Published
Oct 11, 2022
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2022-40138: Critical severity, CVSS 9.8 | Vulnix