CVE-2016-7190

HIGH

Microsoft Edge - Remote Code Execution via Chakra JavaScript Engine Memory Corruption

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2016-7190. PoCs published by Google Security Research, 0xcl.

AI-analyzed exploit summary This exploit demonstrates a heap overflow in Chakra's Array.map implementation when handling Proxy objects. It manipulates the array species creation to force an integer array to be used, leading to a heap overflow when writing mapped values.

Description

The Chakra JavaScript engine in Microsoft Edge allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-3386, CVE-2016-3389, and CVE-2016-7194.

Exploits (2)

exploitdb WORKING POC VERIFIED
by Google Security Research · htmldoswindows
https://www.exploit-db.com/exploits/40602

This exploit demonstrates a heap overflow in Chakra's Array.map implementation when handling Proxy objects. It manipulates the array species creation to force an integer array to be used, leading to a heap overflow when writing mapped values.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Chakra JavaScript Engine (Edge)
No auth needed
Prerequisites: Target must be using Microsoft Edge with Chakra engine
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 10 stars
by 0xcl · poc
https://github.com/0xcl/cve-2016-7190

This repository contains functional exploit code for CVE-2016-7190, a heap overflow in ChakraCore's Array.map() function. It includes multiple PoCs demonstrating control-flow hijacking, JIT compiler IR corruption, and .mrdata section remapping attacks.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Reliable
Target: ChakraCore Release 1.8 (6e56489a4fe940ce6f8a960caf9429700bf2d8db)
No auth needed
Prerequisites: ChakraCore Release 1.8 · Windows 10 Pro x64 / 10.0.14393 Build 14393
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1036993
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/93428

Scores

CVSS v3 7.5
EPSS 0.7845
EPSS Percentile 99.1%
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-119
Status published
Products (2)
microsoft/edge
nuget/Microsoft.ChakraCore 0NuGet
Published Oct 14, 2016
Tracked Since Feb 18, 2026