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Microsoft Windows 11 23h2 · CLFS.sys Elevation of Privilege

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Mentioned vulnerabilities

Severity
High

Rated by Threat Radar

Data as of 11 Jun 2025, 21:07 UTC

What to do

AI-suggested

1. Immediate deployment of any available Microsoft security updates or patches addressing CVE-2024-49138 once released. 2. Implement strict local access controls and limit administrative privileges to reduce the risk of local exploitation. 3. Employ application whitelisting and endpoint detection and response (EDR) solutions capable of detecting unusual kernel memory manipulation or privilege escalation attempts. 4. Monitor creation and modification of Common Log File System (CLFS) containers and unusual file system activity in directories like C:\temp or other temporary folders. 5. Restrict the ability to execute untrusted code locally, including disabling or restricting use of developer tools and compilers on production systems. 6. Use Windows Defender Exploit Guard or similar technologies to harden kernel-mode driver interactions. 7. Conduct regular audits of user privileges and active processes to detect anomalies indicative of token swapping or privilege escalation. 8. Employ network segmentation to limit lateral movement from compromised endpoints. 9. Educate users on phishing and social engineering risks to prevent initial compromise that could lead to local code execution. 10. Prepare incident response plans specifically addressing kernel-level compromises and privilege escalations.

Description

Microsoft Windows 11 23h2 - CLFS.sys Elevation of Privilege

Indicators of compromise

Exploit source code

Exploit code for Microsoft Windows 11 23h2 - CLFS.sys Elevation of PrivilegeC/C++ · 17,391 characters
# Exploit Title: Microsoft Windows 11 23h2 - CLFS.sys Elevation of Privilege 
# Date: 2025-04-16
# Exploit Author: Milad Karimi (Ex3ptionaL)
# Contact: miladgrayhat@gmail.com
# Zone-H: www.zone-h.org/archive/notifier=Ex3ptionaL
# MiRROR-H: https://mirror-h.org/search/hacker/49626/
# CVE: CVE-2024-49138


#include <iostream>
#include <Windows.h>
#include <clfsw32.h>
#include <format>
#include <psapi.h>
#include <iostream>
#include <fstream>
#include <iomanip>
#include <vector>
#include <cstdint>
…

References

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