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Dark Elevator: Windows Install Service Local Privilege Escalation (CVE-2026-50343)
TL;DR
Dark Elevator is a local privilege escalation vulnerability in Windows 11 that allows normal users to execute code with SYSTEM privileges. This exploit, identified as CVE-2026-50343, was reported to Microsoft and subsequently fixed.
✦ Why It Matters
Ensure your Windows systems are updated to mitigate this critical vulnerability.
Key Takeaways
- Update Windows to the latest version to close vulnerabilities.
- Monitor for unusual DLLs in user-writable directories.
- Educate users about the risks of privilege escalation.
- Implement strict access controls on system services.
How It Works
The exploit leverages a writable registry key, StaticPluginMap, allowing normal users to redirect the InstallService to load a user-controlled DLL. By placing a malicious DLL in a user-writable directory, the attacker can execute code with SYSTEM privileges when the InstallService activates the plugin.