Common Log File System

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First seenNov 12, 2026
Last mentioned9h ago

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Windows SignDrop zero-day grants SYSTEM privileges via CLFS

Researcher Abdelhamid Naceri published a PoC; Microsoft has no patch, and he estimates 80% of Windows installs are vulnerable.

BleepingComputerupdated Nov 12, 17:50 UTC · 7h agofirst Nov 12, 16:04 UTC · 9h agoExploit / PoC 4 sources

Appears with

SignDropmalware · 1
Windows Defenderproduct · 1
Microsoftvendor · 1
Windowsproduct · 1

Entities are extracted by the model from each article. First seen Nov 12, 2026, last mentioned 9h ago. Watching keeps it in this browser only (no account); the watchlist page and dashboard alerts use it.