CVE-2025-59507
📋 TL;DR
A race condition vulnerability in Windows Speech allows authenticated attackers to escalate privileges on local systems. This affects Windows systems with Speech features enabled, requiring an attacker to already have some level of access to the target machine.
💻 Affected Systems
- Windows Speech
📦 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
Full system compromise with SYSTEM privileges, allowing complete control over the affected Windows system.
Likely Case
Local privilege escalation from standard user to administrator or SYSTEM level access.
If Mitigated
Limited impact if proper access controls and monitoring are in place, though privilege escalation could still occur.
🎯 Exploit Status
Requires authenticated access and race condition exploitation timing. No public exploit code available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Will be specified in Microsoft's monthly security updates
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59507
Restart Required: Yes
Instructions:
1. Apply the latest Windows security updates from Microsoft
2. Ensure Windows Update is configured to receive security patches
3. Restart the system after patch installation
🔧 Temporary Workarounds
Disable Windows Speech
windowsTemporarily disable Windows Speech features to mitigate the vulnerability
Open Windows Settings > Privacy & Security > Speech
Turn off 'Online speech recognition' and disable speech services
🧯 If You Can't Patch
- Implement strict access controls and monitoring for users with local access
- Disable Windows Speech features until patching is possible
🔍 How to Verify
Check if Vulnerable:
Check if Windows Speech features are enabled and system has not received the security patchCheck Version:
wmic os get caption, version, buildnumberVerify Fix Applied:
Verify Windows Update history shows the relevant security patch has been installed📡 Detection & Monitoring
Log Indicators:
- Unusual process creation by speech-related services
- Privilege escalation attempts from speech processes
Network Indicators:
- Local system activity only - no network indicators
SIEM Query:
Process creation where parent process contains 'speech' or 'sapi' and child process has elevated privileges