CVE-2017-8729

HIGH

Microsoft Edge - Remote Code Execution via Scripting Engine Memory Corruption

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-8729. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC exploits a type confusion vulnerability in Chakra's parser by crafting an invalid syntax that bypasses proper object pattern conversion, leading to incorrect member assignment and potential arbitrary code execution.

Description

Microsoft Edge in Microsoft Windows 10 1703 allows an attacker to execute arbitrary code in the context of the current user, due to the way that the Microsoft Edge scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8649, CVE-2017-8660, CVE-2017-8738, CVE-2017-8740, CVE-2017-8741, CVE-2017-8748, CVE-2017-8752, CVE-2017-8753, CVE-2017-8755, CVE-2017-8756, and CVE-2017-11764.

Exploits (1)

exploitdb WORKING POC VERIFIED

by Google Security Research · htmldoswindows

https://www.exploit-db.com/exploits/42763

View Code ZIP pw:eip

This PoC exploits a type confusion vulnerability in Chakra's parser by crafting an invalid syntax that bypasses proper object pattern conversion, leading to incorrect member assignment and potential arbitrary code execution.

Classification

Working Poc 100%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: Microsoft ChakraCore (Edge/IE JavaScript engine)

No auth needed

Prerequisites: Target must execute the malicious JavaScript code

MITRE ATT&CK

T1189 - Drive-by Compromise

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/100733

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1039342

Patch, Vendor Advisory x_refsource_confirm

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8729

Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db

https://www.exploit-db.com/exploits/42763/

Scores

CVSS v3 7.5

EPSS 0.7823

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-119

Status published

Products (2)

microsoft/edge

Microsoft Corporation/Microsoft Edge Microsoft Windows 10 1703

Published Sep 13, 2017

Tracked Since Feb 18, 2026