CVE-2023-28081

CRITICAL

Hermes - Use-After-Free via Bytecode Optimization Bug

Title source: llm

Description

A bytecode optimization bug in Hermes prior to commit e6ed9c1a4b02dc219de1648f44cd808a56171b81 could be used to cause an use-after-free and obtain arbitrary code execution via a carefully crafted payload. 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-2023-28081

Patch x_refsource_misc

https://github.com/facebook/hermes/commit/e6ed9c1a4b02dc219de1648f44cd808a56171b81

View Patch ZIP pw:eip

Scores

CVSS v3 9.8

EPSS 0.0089

EPSS Percentile 54.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

Details

CWE

CWE-416

Status published

Products (1)

facebook/hermes

Published May 18, 2023

Tracked Since Feb 18, 2026