cvedb.io
CVE-2023-23556
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2023-05-18T22:15:09.487 · Last modified 2026-06-17T05:37:25.630

Summary

An error in BigInt conversion to Number in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80 could have been used by a malicious attacker to execute arbitrary code due to an out-of-bound write. Note that this bug is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

Affected products

facebook — hermes

Does this affect you?

Add your gear to cvedb and we'll alert you only when facebook ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.