CVE-2025-24046
📋 TL;DR
CVE-2025-24046 is a use-after-free vulnerability in Microsoft Streaming Service that allows an authenticated attacker to execute arbitrary code with elevated privileges on a local system. This affects Windows systems where the attacker already has some level of access and can exploit the memory corruption flaw. The vulnerability enables privilege escalation from a lower-privileged account to SYSTEM or administrator level.
💻 Affected Systems
- Microsoft Windows
📦 What is this software?
Windows 10 1507 by Microsoft
Windows 10 1507 by Microsoft
Windows 10 1607 by Microsoft
Windows 10 1607 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 21h2 by Microsoft
Windows 10 22h2 by Microsoft
Windows 11 22h2 by Microsoft
Windows 11 24h2 by Microsoft
Windows 11 24h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with SYSTEM-level privileges, enabling installation of persistent malware, credential theft, lateral movement, and data exfiltration.
Likely Case
Local privilege escalation allowing attackers to bypass security controls, install additional malware, or access sensitive system resources.
If Mitigated
Limited impact due to proper patch management, least privilege principles, and endpoint protection that detects exploitation attempts.
🎯 Exploit Status
Requires local authenticated access and knowledge of memory manipulation techniques. The use-after-free condition must be triggered with precise timing and memory layout.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply the latest Windows security updates from Microsoft's February 2025 Patch Tuesday or later
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24046
Restart Required: Yes
Instructions:
1. Open Windows Update Settings. 2. Click 'Check for updates'. 3. Install all available security updates. 4. Restart the system when prompted.
🔧 Temporary Workarounds
Disable Microsoft Streaming Service
WindowsStop and disable the vulnerable service to prevent exploitation
sc stop "Microsoft Streaming Service"
sc config "Microsoft Streaming Service" start= disabled
🧯 If You Can't Patch
- Implement strict least privilege principles to limit the impact of successful privilege escalation
- Deploy endpoint detection and response (EDR) solutions configured to detect and block exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check Windows version and patch level via 'winver' command and verify if February 2025 or later security updates are installedCheck Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify the patch is installed via 'Get-Hotfix' in PowerShell or check Windows Update history📡 Detection & Monitoring
Log Indicators:
- Event ID 4688 with suspicious parent process spawning SYSTEM-level processes
- Unexpected service control operations related to Microsoft Streaming Service
Network Indicators:
- Not applicable - local exploitation only
SIEM Query:
EventID=4688 AND NewProcessName="*" AND SubjectUserName!="SYSTEM" AND TokenElevationType="%%1936"