CVE-2018-8639
HIGH KEV RANSOMWAREWindows - Elevation of Privilege via Win32k Memory Handling
Title source: llmExploitation Summary
CVE-2018-8639 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added March 3, 2025, with confirmed use in ransomware campaigns. EIP tracks 4 public exploits from researchers including ze0r, timwhitez, Ascotbe.
AI-analyzed exploit summary This is a working exploit for CVE-2018-8639, a Windows privilege escalation vulnerability. It leverages memory corruption in the win32k.sys driver to achieve arbitrary read/write in kernel memory, ultimately swapping the current process token with the SYSTEM token.
Description
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka "Win32k Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8641.
Exploits (4)
This is a working exploit for CVE-2018-8639, a Windows privilege escalation vulnerability. It leverages memory corruption in the win32k.sys driver to achieve arbitrary read/write in kernel memory, ultimately swapping the current process token with the SYSTEM token.
This repository contains an executable exploit for CVE-2018-8639, a Windows privilege escalation vulnerability. The README provides usage instructions and disclaimers about the potential misuse of the exploit.
This repository contains documentation and configuration scripts for a collection of Windows kernel exploits, including CVE-2003-0352, CVE-2006-3439, CVE-2008-1084, and others. It includes README files in both Chinese and English, as well as a Python script for generating documentation.
This repository contains a functional exploit for CVE-2018-8639, a local privilege escalation vulnerability in Windows 7 SP1 64-bit due to a double-free in the window class handling mechanism. The exploit leverages the ReferenceClass function's improper handling of the lpszMenuName field during tagCLS structure cloning.
References (3)
Scores
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H