VULNERABILITY INTELLIGENCE

CVE-2023-23556

CVSS score9.8 CRITICAL
EPSS probability0.89%
CISA KEVNot currently listed
Published2023-05-18
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

  • nvd@nist.gov: CWE-787

Primary references