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Microsoft Unveils Mitigations for Windows YellowKey Zero-Day

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Source: BleepingComputer
Microsoft Unveils Mitigations for Windows YellowKey Zero-Day
Photo: BleepingComputer
TL;DR

Microsoft released mitigations for the YellowKey Windows BitLocker zero-day (CVE-2026-45585) after a PoC disclosure by Nightmare Eclipse, detailing steps to prevent exploitation—removing the autofstx.exe entry from the Session Manager BootExecute to stop FsTx replay, reestablishing BitLocker trust for WinRE, and enforcing TPM+PIN startup or a startup PIN with TPM on devices (via PowerShell, Intune, or Group Policy)—to block attacks until a patch is available.

Topics:technologysecurity#bitlocker#mitigations#security#windows#yellowkey#zero-day
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  1. Microsoft shares mitigation for YellowKey Windows zero-day  BleepingComputer
  2. Microsoft Releases Mitigation for YellowKey BitLocker Bypass CVE-2026-45585 Exploit  The Hacker News
  3. Windows Zero-Day Barrage Continues After Patch Tuesday  Dark Reading
  4. Nightmare-Eclipse: six zero-days, six weeks and one big grudge  Barracuda Networks Blog
  5. Microsoft Releases Mitigation for Windows BitLocker Security Bypass 0-Day Vulnerability  CyberSecurityNews

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