CVE-2018-8288

HIGH

Microsoft Browsers - Memory Corruption

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-8288. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC exploits a type confusion vulnerability in JavaScript engines by redefining Map.prototype.get to manipulate array elements during Intl object initialization. It demonstrates a memory corruption technique that could lead to arbitrary code execution.

Description

A remote code execution vulnerability exists in the way the scripting engine handles objects in memory in Microsoft browsers, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge. This CVE ID is unique from CVE-2018-8242, CVE-2018-8283, CVE-2018-8287, CVE-2018-8291, CVE-2018-8296, CVE-2018-8298.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · javascriptdoswindows
https://www.exploit-db.com/exploits/45213

This PoC exploits a type confusion vulnerability in JavaScript engines by redefining Map.prototype.get to manipulate array elements during Intl object initialization. It demonstrates a memory corruption technique that could lead to arbitrary code execution.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Mozilla Firefox < 60, Firefox ESR < 52.8
No auth needed
Prerequisites: Target must visit a malicious webpage or execute the JavaScript code
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/45213/
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1041256
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/104636
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1041258

Scores

CVSS v3 7.5
EPSS 0.7879
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-787
Status published
Products (4)
microsoft/chakracore < 1.10.1
microsoft/edge
microsoft/internet_explorer 11
nuget/Microsoft.ChakraCore 0 - 1.10.1NuGet
Published Jul 11, 2018
Tracked Since Feb 18, 2026