CVE-2017-11802

HIGH

ChakraCore & Microsoft Edge - Memory Corruption

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-11802. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC exploits a type confusion vulnerability in ChakraCore's JIT optimization for String.prototype.replace. It manipulates the JIT's assumptions by replacing a function during optimization, leading to incorrect type handling.

Description

ChakraCore and 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 how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11792, CVE-2017-11793, CVE-2017-11796, CVE-2017-11797, CVE-2017-11798, CVE-2017-11799, CVE-2017-11800, CVE-2017-11801, CVE-2017-11804, CVE-2017-11805, CVE-2017-11806, CVE-2017-11807, CVE-2017-11808, CVE-2017-11809, CVE-2017-11810, CVE-2017-11811, CVE-2017-11812, and CVE-2017-11821.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · javascriptdoswindows
https://www.exploit-db.com/exploits/43000

This PoC exploits a type confusion vulnerability in ChakraCore's JIT optimization for String.prototype.replace. It manipulates the JIT's assumptions by replacing a function during optimization, leading to incorrect type handling.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft ChakraCore (Edge/IE JavaScript engine)
No auth needed
Prerequisites: Target must execute the JavaScript code 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_sectrack
http://www.securitytracker.com/id/1039529
Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/43000/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/101130

Scores

CVSS v3 7.5
EPSS 0.6916
EPSS Percentile 99.3%
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 (3)
microsoft/chakracore < 1.7.2
microsoft/edge
Microsoft Corporation/ChakraCore, Microsoft Edge ChakraCore, Microsoft Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016.
Published Oct 13, 2017
Tracked Since Feb 18, 2026