CVE-2017-11893

HIGH

ChakraCore and Microsoft Edge - Memory Corruption

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-11893. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC exploits a type confusion vulnerability in Microsoft Office's JavaScript engine (CVE-2017-11893) by manipulating the 'Math.max' function and leveraging JIT optimization to achieve arbitrary memory corruption. The exploit demonstrates how a user-defined function can be called without proper flag updates, leading to potential RCE.

Description

ChakraCore and Microsoft Edge in Windows 10 1511, 1607, 1703, 1709, 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-2017-11886, CVE-2017-11889, CVE-2017-11890, CVE-2017-11894, CVE-2017-11895, CVE-2017-11901, CVE-2017-11903, CVE-2017-11905, CVE-2017-11907, CVE-2017-11908, CVE-2017-11909, CVE-2017-11910, CVE-2017-11911, CVE-2017-11912, CVE-2017-11913, CVE-2017-11914, CVE-2017-11916, CVE-2017-11918, and CVE-2017-11930.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · javascriptdoswindows
https://www.exploit-db.com/exploits/43466

This PoC exploits a type confusion vulnerability in Microsoft Office's JavaScript engine (CVE-2017-11893) by manipulating the 'Math.max' function and leveraging JIT optimization to achieve arbitrary memory corruption. The exploit demonstrates how a user-defined function can be called without proper flag updates, leading to potential RCE.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Office (Equation Editor)
No auth needed
Prerequisites: Victim must open a malicious Office document
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/102081
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1039990
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/43466/

Scores

CVSS v3 7.5
EPSS 0.7399
EPSS Percentile 98.9%
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 (4)
microsoft/chakracore < 1.7.5
microsoft/edge
Microsoft Corporation/ChakraCore, Microsoft Edge Windows 10 1511, 1607, 1703, 1709, and Windows Server 2016.
nuget/Microsoft.ChakraCore 0 - 1.7.5NuGet
Published Dec 12, 2017
Tracked Since Feb 18, 2026