CVE-2018-0834

HIGH

ChakraCore - Remote Code Execution via Memory Corruption in Scripting Engine

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2018-0834. PoCs published by Google Security Research, SpiralBL0CK.

AI-analyzed exploit summary This exploit leverages a type confusion vulnerability in ChakraCore's JIT compiler by manipulating array prototypes, leading to potential arbitrary code execution. The PoC demonstrates the issue by triggering incorrect array type handling during optimization.

Description

Microsoft Edge and ChakraCore in Microsoft Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows remote code execution, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838, CVE-2018-0840, CVE-2018-0856, CVE-2018-0857, CVE-2018-0858, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861, and CVE-2018-0866.

Exploits (2)

exploitdb WORKING POC VERIFIED
by Google Security Research · javascriptdoswindows
https://www.exploit-db.com/exploits/44078

This exploit leverages a type confusion vulnerability in ChakraCore's JIT compiler by manipulating array prototypes, leading to potential arbitrary code execution. The PoC demonstrates the issue by triggering incorrect array type handling during optimization.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft ChakraCore (Edge/IE JavaScript engine)
No auth needed
Prerequisites: Target must be running a vulnerable version of ChakraCore (e.g., Edge or IE with affected updates)
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 5 stars
by SpiralBL0CK · poc
https://github.com/SpiralBL0CK/-CVE-2018-0834-aab-aar

This is a working exploit PoC for CVE-2018-0834, a memory corruption vulnerability in Microsoft ChakraCore. The exploit leverages type confusion and memory manipulation to achieve arbitrary code execution, bypassing mitigations like CFG, DEP, and ASLR.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Reliable
Target: Microsoft ChakraCore (Edge/IE JavaScript engine)
No auth needed
Prerequisites: Victim must visit a malicious webpage or execute the JavaScript in a vulnerable ChakraCore environment
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/102859
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/44078/
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1040372

Scores

CVSS v3 7.5
EPSS 0.7810
EPSS Percentile 99.0%
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-787
Status published
Products (3)
microsoft/chakracore
microsoft/edge
nuget/Microsoft.ChakraCore 0 - 1.8.1NuGet
Published Feb 15, 2018
Tracked Since Feb 18, 2026