CVE-2024-35265
📋 TL;DR
This vulnerability allows an authenticated attacker to elevate privileges on Windows systems by exploiting the Windows Perception Service. It affects Windows 10, Windows 11, and Windows Server systems with the vulnerable service enabled.
💻 Affected Systems
- Windows 10
- Windows 11
- Windows Server 2019
- Windows Server 2022
📦 What is this software?
Windows 10 1809 by Microsoft
Windows 10 21h2 by Microsoft
Windows 10 22h2 by Microsoft
Windows 11 21h2 by Microsoft
Windows 11 22h2 by Microsoft
Windows 11 23h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
An attacker gains SYSTEM-level privileges, enabling complete system compromise, data theft, malware installation, and lateral movement across the network.
Likely Case
Local authenticated attackers escalate privileges to gain administrative control over the compromised system.
If Mitigated
With proper access controls and patch management, impact is limited to isolated systems with minimal data exposure.
🎯 Exploit Status
Requires local authenticated access and specific conditions to trigger the privilege escalation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: July 2024 security updates (KB5040442 for Windows 11, KB5040437 for Windows 10, etc.)
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-35265
Restart Required: Yes
Instructions:
1. Apply July 2024 Windows security updates via Windows Update. 2. Alternatively, download and install the specific KB patch for your Windows version. 3. Restart the system to complete installation.
🔧 Temporary Workarounds
Disable Windows Perception Service
windowsDisables the vulnerable service to prevent exploitation
sc config "PerceptionSimulation" start= disabled
sc stop "PerceptionSimulation"
🧯 If You Can't Patch
- Implement strict access controls and least privilege principles
- Monitor for suspicious service manipulation and privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check if July 2024 security updates are installed via Windows Update history or systeminfo commandCheck Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify KB5040442 (Windows 11) or KB5040437 (Windows 10) is installed and PerceptionSimulation service version is updated📡 Detection & Monitoring
Log Indicators:
- Event ID 4688 with PerceptionSimulation service manipulation
- Unexpected privilege escalation events in security logs
Network Indicators:
- Unusual outbound connections from systems after local privilege escalation
SIEM Query:
EventID=4688 AND (ProcessName="PerceptionSimulation" OR CommandLine CONTAINS "PerceptionSimulation")