CVE-2022-35289

9.8 criticalEPSS 1.2%

Critical (9.8) in facebook hermes. EPSS 1.2% chance of exploitation in the next 30 days.

A write-what-where condition in hermes caused by an integer overflow, prior to commit 5b6255ae049fa4641791e47fad994e8e8c4da374 allows attackers to potentially execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-31)
CWEs: CWE-190, CWE-680
Published: 2022-10-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

facebook:hermes

References

https://github.com/facebook/hermes/commit/5b6255ae049fa4641791e47fad994e8e8c4da374
https://www.facebook.com/security/advisories/CVE-2022-35289
https://github.com/facebook/hermes/commit/5b6255ae049fa4641791e47fad994e8e8c4da374
https://www.facebook.com/security/advisories/CVE-2022-35289

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