CVE-2017-8734

HIGH

Microsoft Edge - Remote Code Execution via Memory Corruption

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-8734. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC demonstrates an out-of-bounds read vulnerability in Microsoft Edge's JavaScript engine (Chakra) by manipulating DOM elements and triggering a crash in Js::CustomExternalObject::GetItem. The exploit leverages incorrect handling of the 'options' array cache, potentially leading to remote code execution.

Description

Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to the way that Microsoft Edge accesses objects in memory, aka "Microsoft Edge Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8731, CVE-2017-8751, and CVE-2017-11766.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · htmldoswindows
https://www.exploit-db.com/exploits/42759

This PoC demonstrates an out-of-bounds read vulnerability in Microsoft Edge's JavaScript engine (Chakra) by manipulating DOM elements and triggering a crash in Js::CustomExternalObject::GetItem. The exploit leverages incorrect handling of the 'options' array cache, potentially leading to remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Racy
Target: Microsoft Edge 38.14393.1066.0 (EdgeHTML 14.14393) and Microsoft Edge 40.15063.0.0 (EdgeHTML 15.15063)
No auth needed
Prerequisites: Victim must visit a malicious webpage using a vulnerable version of Microsoft Edge
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1039326
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42759/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/100738

Scores

CVSS v3 7.5
EPSS 0.7005
EPSS Percentile 98.7%
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 Gold, 1511, 1607, 1703, and Windows Server 2016.
Published Sep 13, 2017
Tracked Since Feb 18, 2026