CVE-2023-23557

CRITICAL 9.8

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

An error in Hermes' algorithm for copying objects properties prior to commit a00d237346894c6067a594983be6634f4168c9ad could be used by a malicious attacker to execute arbitrary code via type confusion. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

Vendor	facebook
Product	hermes
Published	May 18, 2023
Last Updated	Jan 21, 2025

Stay Ahead of the Next One

Get instant alerts for facebook hermes

Be the first to know when new critical vulnerabilities affecting facebook hermes are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

Facebook / Hermes

0 < a00d237346894c6067a594983be6634f4168c9ad

References

NVD ↗ CVE.org ↗ EPSS Data ↗

facebook.com: https://www.facebook.com/security/advisories/cve-2023-23557 github.com: https://github.com/facebook/hermes/commit/a00d237346894c6067a594983be6634f4168c9ad