CVE-2025-47993
📋 TL;DR
This vulnerability in Microsoft PC Manager allows authenticated attackers to bypass intended access controls and gain elevated privileges on the local system. It affects users running vulnerable versions of Microsoft PC Manager on Windows systems. Attackers must already have some level of access to the system to exploit this flaw.
💻 Affected Systems
- Microsoft PC Manager
📦 What is this software?
Windows 11 24h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
An attacker with initial access could gain SYSTEM/administrator privileges, install persistent malware, disable security controls, access sensitive data, and pivot to other systems.
Likely Case
Malicious insiders or attackers who have gained initial foothold could elevate privileges to install additional tools, maintain persistence, or bypass security monitoring.
If Mitigated
With proper access controls and least privilege principles, impact is limited to the compromised user account scope.
🎯 Exploit Status
Requires authenticated access to the system. The attacker needs to be able to execute code in the context of a standard user account.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Microsoft PC Manager update through Microsoft Store or Windows Update
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47993
Restart Required: Yes
Instructions:
1. Open Microsoft Store 2. Click Library 3. Click Get updates 4. Install Microsoft PC Manager update 5. Restart the system
🔧 Temporary Workarounds
Uninstall Microsoft PC Manager
windowsRemove the vulnerable application entirely
winget uninstall Microsoft.PCManager
Or use Settings > Apps > Microsoft PC Manager > Uninstall
Restrict application execution
windowsUse AppLocker or Windows Defender Application Control to block Microsoft PC Manager execution
🧯 If You Can't Patch
- Implement strict least privilege principles - ensure users run with minimal necessary permissions
- Monitor for privilege escalation attempts using Windows Event Logs and security tools
🔍 How to Verify
Check if Vulnerable:
Check Microsoft PC Manager version in Settings > Apps > Microsoft PC Manager > Advanced optionsCheck Version:
Get-AppxPackage -Name Microsoft.PCManager | Select VersionVerify Fix Applied:
Verify Microsoft PC Manager has updated to latest version and check Windows Update history for applied patches📡 Detection & Monitoring
Log Indicators:
- Windows Event ID 4688 with Microsoft PC Manager process spawning elevated processes
- Unexpected privilege escalation events
- Microsoft PC Manager accessing privileged resources
Network Indicators:
- None - this is a local privilege escalation
SIEM Query:
EventID=4688 AND ProcessName="*PCManager*" AND NewProcessName IN ("cmd.exe", "powershell.exe", "net.exe", "reg.exe")