Last Updated: 2026-08-12T15:42:00Z
CVSSv3: N/A
What’s Happening
Right on schedule, our old pal NightmareEclipse has dropped the latest Windows 0-day.
The code is hosted in multiple locations, including GitHub.
This appears to be the full exploit of the vulnerability initially demonstrated in RoguePlanet.
Will Dormann confirms the exploit works on patched Windows 11.
As the nature of the vuln suggests, Defender must be enabled for the exploit to work.
Actions
Wait for a patch? And potentially watch for the compiled exploit file write.
Indicators
| Value | Type | Description |
|---|---|---|
4e3146d667812ace49638e15f9dbb37b9e13f7222ed4984e065723715c692338 |
SHA256 | ShieldBreak.exe compiled hash |