Cyber Resilience

CVE-2022-40138

Critical

Published: 11 October 2022

Published
11 October 2022
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0122 79.5th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-40138 is a critical-severity Incorrect Conversion between Numeric Types (CWE-681) vulnerability in Facebook Hermes. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 20.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

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JavaScript. Hence, most React Native applications are not affected.

CWE(s)
CWE-681

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

facebook
hermes
≤ 2022-09-27

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References