What’s Vulnerable › Vulnerabilities

CVE-2023-25933

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-05-18 · updated 2026-06-17
• Weakness: CWE-843

Description

A type confusion bug in TypedArray prior to commit e6ed9c1a4b02dc219de1648f44cd808a56171b81 could have been used by a malicious attacker to execute arbitrary code via untrusted JavaScript. Note that this 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: all versions

References

• https://github.com/facebook/hermes/commit/e6ed9c1a4b02dc219de1648f44cd808a56171b81
• https://www.facebook.com/security/advisories/cve-2023-25933
• https://github.com/facebook/hermes/commit/e6ed9c1a4b02dc219de1648f44cd808a56171b81
• https://www.facebook.com/security/advisories/cve-2023-25933

Get alerted when CVE-2023-25933 or the next vulnerability affects your stack