Critical severity9.8NVD Advisory· Published Oct 11, 2022· Updated Jun 17, 2026
CVE-2022-40138
CVE-2022-40138
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.
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Affected products
3Patches
Vulnerability mechanics
References
2- github.com/facebook/hermes/commit/6aa825e480d48127b480b08d13adf70033237097nvdPatchThird Party Advisory
- www.facebook.com/security/advisories/CVE-2022-40138nvdVendor Advisory
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