CVE-2018-8384

HIGH

ChakraCore < 1.10.2 - Remote Code Execution via Type Confusion

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-8384. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC exploits a type confusion vulnerability in ChakraCore (CVE-2018-8384) by manipulating object attributes during deoptimization, allowing a data property to be treated as an accessor. The exploit leverages the inconsistency in attribute handling when object header inlining is deoptimized.

Description

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore. This CVE ID is unique from CVE-2018-8266, CVE-2018-8380, CVE-2018-8381.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · javascriptdoswindows
https://www.exploit-db.com/exploits/45431

This PoC exploits a type confusion vulnerability in ChakraCore (CVE-2018-8384) by manipulating object attributes during deoptimization, allowing a data property to be treated as an accessor. The exploit leverages the inconsistency in attribute handling when object header inlining is deoptimized.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft ChakraCore (Edge browser)
No auth needed
Prerequisites: Target must be using a vulnerable version of ChakraCore
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/104981
Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/45431/

Scores

CVSS v3 7.5
EPSS 0.8127
EPSS Percentile 99.2%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-843
Status published
Products (2)
microsoft/chakracore
nuget/Microsoft.ChakraCore 0 - 1.10.2NuGet
Published Aug 15, 2018
Tracked Since Feb 18, 2026