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
Product
clfs.sys
- Mentions · 7d2
- Mentions · 30d2
- All mentions2
- First seenNov 12, 2026
- Last mentioned7h ago
Timeline
2 articles · newest firstUnpatched Windows SignDrop PoC escalates a user to SYSTEM
The local CLFS proof of concept has no CVE or Microsoft patch, and no in-the-wild attacks are reported.
74
Appears with
- Microsoftvendor · 2
- Windowsproduct · 2
- Microsoft Defenderproduct · 2
- CISAorganization · 1
- 78researchlaborganization · 1
- SignDropmalware · 1
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