CVE-2025-59513
📋 TL;DR
This vulnerability allows an authorized attacker to read memory outside the intended buffer in Windows Bluetooth RFCOM Protocol Driver, potentially exposing sensitive information. It affects Windows systems with Bluetooth functionality enabled. Attackers need local access to exploit this vulnerability.
💻 Affected Systems
- Windows Bluetooth RFCOM Protocol Driver
📦 What is this software?
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 23h2 by Microsoft
Windows 11 24h2 by Microsoft
Windows 11 25h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
An attacker could read sensitive kernel memory, potentially exposing credentials, encryption keys, or other system data that could lead to privilege escalation or further attacks.
Likely Case
Information disclosure of limited kernel memory contents, potentially revealing system information or partial data from other processes.
If Mitigated
Minimal impact with proper access controls and monitoring in place, as the attacker needs local access and the vulnerability only allows reading, not writing or code execution.
🎯 Exploit Status
Exploitation requires local access and understanding of Bluetooth protocol driver internals. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Microsoft Security Update Guide for specific KB numbers
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59513
Restart Required: Yes
Instructions:
1. Open Windows Update settings
2. Check for updates
3. Install all available security updates
4. Restart the system when prompted
🔧 Temporary Workarounds
Disable Bluetooth RFCOM Protocol
windowsDisable the vulnerable Bluetooth protocol driver if Bluetooth functionality is not required
Disable via Device Manager: Right-click Bluetooth RFCOMM Protocol TDI driver > Disable device
🧯 If You Can't Patch
- Restrict local access to systems via strong authentication and access controls
- Disable Bluetooth functionality on systems where it's not required
🔍 How to Verify
Check if Vulnerable:
Check Windows Update history for the specific KB patch mentioned in Microsoft advisoryCheck Version:
wmic qfe list | findstr KB[number]Verify Fix Applied:
Verify the patch is installed via Windows Update history or system information📡 Detection & Monitoring
Log Indicators:
- Unusual Bluetooth driver activity
- Multiple failed Bluetooth connection attempts
- System logs showing driver crashes
Network Indicators:
- Unusual Bluetooth traffic patterns
- Multiple connection attempts to Bluetooth services
SIEM Query:
EventID=1000 OR EventID=1001 Source='Bluetooth' OR ProcessName contains 'rfcomm'