Researcher Releases FalconFlank PoC Showing Privilege Escalation in CrowdStrike Falcon

The security researcher known as Chaotic Eclipse (aka INFINITE NIGHTMARE, MSNightmare, and Nightmare-Eclipse) has dropped a new zero-day dubbed FalconFlank, a privilege escalation flaw impacting Crowdstrike Falcon.

"FalconFlank is a 0day privilege escalation that abuses the office malicious macros remediation in CrowdStrike Falcon Sensor," the researcher said in a GitHub README file, adding

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id: 2867
uid: WfPmF
insdate: 2026-09-03 07:10:05
title: Researcher Releases FalconFlank PoC Showing Privilege Escalation in CrowdStrike Falcon
additional: The security researcher known as Chaotic Eclipse (aka INFINITE NIGHTMARE, MSNightmare, and Nightmare-Eclipse) has dropped a new zero-day dubbed FalconFlank, a privilege escalation flaw impacting Crowdstrike Falcon.

"FalconFlank is a 0day privilege escalation that abuses the office malicious macros remediation in CrowdStrike Falcon Sensor," the researcher said in a GitHub README file, adding
category: Cybersecurity
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guid: https://thehackernews.com/2026/09/researcher-releases-falconflank-poc.html
source_url: https://thehackernews.com/2026/09/researcher-releases-falconflank-poc.html
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