SignDrop PoC claims SYSTEM access through Windows CLFS authentication
Microsoft has not assigned a CVE or shipped a fix, and no real-world attacks have been reported.
66
Malware
SignDrop
- Mentions · 7d3
- Mentions · 30d3
- All mentions3
- First seenNov 11, 2026
- Last mentioned7h ago
Timeline
3 articles · newest firstWindows 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.
74
Researcher posts unconfirmed Windows SignDrop CLFS privilege PoC
The GitHub proof of concept claims local user-to-SYSTEM escalation, with no CVE or Microsoft confirmation.
58
Appears with
- Windowsproduct · 3
- Microsoftvendor · 3
- Windows Defenderproduct · 1
- Common Log File Systemproduct · 1
- Microsoft Defenderproduct · 1
- CISAorganization · 1
- 78researchlaborganization · 1
- clfs.sysproduct · 1
Entities are extracted by the model from each article. First seen , last mentioned . Watching keeps it in this browser only (no account); the watchlist page and dashboard alerts use it.