Researcher Releases FalconFlank PoC Showing Privilege Escalation in CrowdStrike Falcon
- ID
- 20950
- Status
- summarized
- Published
- 03 Sep 2026, 2:26 PM
- Fetched
- 03 Sep 2026, 3:09 PM
- Provider
- The Hacker News
- Category
- security
- Original URL
- https://thehackernews.com/2026/09/researcher-releases-falconflank-poc.html
- Source URL
- https://feeds.feedburner.com/TheHackersNews
Summary
- Score
- 4.5
- Created
- 03 Sep 2026, 3:10 PM
- Tags
- Audience
- developerssaas_founders
What happened
Security researcher Chaotic Eclipse released a PoC called FalconFlank, a zero-day privilege escalation exploit abusing CrowdStrike Falcon Sensor's Office malicious macros remediation on fully updated Windows 11 25H2 and Windows Server 2025. This follows the same researcher's recent PoCs for Kaspersky endpoint security (HardBreacher) and an unpatched Microsoft Defender zero-day (ShieldBreak, CVE-2026-69414) that grants SYSTEM privileges.
Why it matters
If your organization runs CrowdStrike Falcon on Windows 11 25H2 or Server 2025, this PoC demonstrates a working local privilege escalation path that may require adding detection exclusions or DLL load technique changes to test—security teams should verify whether CrowdStrike has shipped detections and whether their Falcon configuration is exposed. For founders running endpoint protection on these specific Windows builds, it's a prompt to check patch status across all three named products (CrowdStrike, Kaspersky 14.0.0.504, and Microsoft Defender, which remains unfixed).
Discussion angle
The pattern of one researcher chaining PoCs against three major endpoint security products (CrowdStrike, Kaspersky, Microsoft Defender) raises the question of whether endpoint protection tools are becoming a broader attack surface—and what that means for startups choosing between relying on a single EDR vendor versus layering controls.