CVE-2018-0776

HIGH

Microsoft Edge - Remote Code Execution via Scripting Engine Memory Corruption

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-0776. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC exploits a type confusion vulnerability in JavaScript engines (CVE-2018-0776) by manipulating stack-allocated arrays that are later boxed to the heap, allowing arbitrary memory manipulation. The exploit demonstrates in-place type conversion to achieve memory corruption.

Description

Microsoft Edge in Windows 10 Gold, 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-2018-0758, CVE-2018-0762, CVE-2018-0768, CVE-2018-0769, CVE-2018-0770, CVE-2018-0772, CVE-2018-0773, CVE-2018-0774, CVE-2018-0775, CVE-2018-0777, CVE-2018-0778, and CVE-2018-0781.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · javascriptdoswindows
https://www.exploit-db.com/exploits/43723

This PoC exploits a type confusion vulnerability in JavaScript engines (CVE-2018-0776) by manipulating stack-allocated arrays that are later boxed to the heap, allowing arbitrary memory manipulation. The exploit demonstrates in-place type conversion to achieve memory corruption.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: JavaScript engines (e.g., V8, SpiderMonkey)
No auth needed
Prerequisites: Target system running a vulnerable JavaScript engine
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/1040100
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/43723/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/102401

Scores

CVSS v3 7.5
EPSS 0.7843
EPSS Percentile 99.5%
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 (2)
microsoft/chakracore < 1.7.6
microsoft/edge
Published Jan 04, 2018
Tracked Since Feb 18, 2026