# Windows CVE-2026-66804 SYSTEM Escalation, PoC Out

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## Article Metadata
- Title: Windows CVE-2026-66804 SYSTEM Escalation, PoC Out
- Summary: Windows Cross Device Service CVE-2026-66804 (CVSS 7.8) gives SYSTEM via a dangling COM registration. Incomplete fix for CVE-2026-50343; patch and detect.
- Published: Oct 2, 2026, 3:31 PM EDT
- Updated: Oct 2, 2026, 3:31 PM EDT
- Category: Exploits
- Primary topic: Local Privilege Escalation
- Authors: Elena Voss
- Read time: 5 min
- Language: en_US
- Publication time zone: America/New_York (U.S. Eastern Time)
- Access: Free to read

## Topic Links
- [Exploits](https://threatfrontier.com/categories/exploits): Category archive for related coverage.
- [Local Privilege Escalation](https://threatfrontier.com/tags/local-privilege-escalation): 1 public article in this topic.

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