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Nightmare-Eclipse Releases BlueHammer Exploit, No Patch Available

4/8/2026

Summary

Story summary

Nightmare-Eclipse released exploit code for a Windows zero-day vulnerability named BlueHammer, enabling local privilege escalation.
The exploit was validated by Will Dormann, who noted its inconsistent success across different Windows versions.
The release reflects growing frustrations with Microsoft’s Security Response Center, as Nightmare-Eclipse criticized their vulnerability-report handling.
There is currently no patch, leaving systems exposed, and users are urged to monitor for unusual privilege escalation and restrict permissions.

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Story summary

Nightmare-Eclipse released exploit code for a Windows zero-day vulnerability named BlueHammer, enabling local privilege escalation.
The exploit was validated by Will Dormann, who noted its inconsistent success across different Windows versions.
The release reflects growing frustrations with Microsoft’s Security Response Center, as Nightmare-Eclipse criticized their vulnerability-report handling.
There is currently no patch, leaving systems exposed, and users are urged to monitor for unusual privilege escalation and restrict permissions.