CVE-2023-24833

HIGH

Hermes < 2023-02-02 - Use-After-Free in BigIntPrimitive Addition

Title source: llm

Description

A use-after-free in BigIntPrimitive addition in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80 could have been used by an attacker to leak raw data from Hermes VM’s heap. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

References (2)

Core 2

Core References

Patch, Vendor Advisory x_refsource_confirm

https://www.facebook.com/security/advisories/cve-2023-24833

Patch x_refsource_misc

https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80

View Patch ZIP pw:eip

Scores

CVSS v3 7.5

EPSS 0.0064

EPSS Percentile 46.3%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-416

Status published

Products (1)

facebook/hermes < 2023-02-02

Published May 18, 2023

Tracked Since Feb 18, 2026