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  Researcher Drops BigDiskBuster Zero-Day PoC That Blocks Microsoft Defender Updates

  Researcher Drops BigDiskBuster Zero-Day PoC That Blocks Microsoft Defender Updates

  

  A zero-day proof-of-concept tool that stops Microsoft Defender from installing platform and signature updates by filling all available disk space was published on GitHub on September 19. The tool, cal ... Read more

  Published Date: Sep 22, 2026 (2 days, 15 hours ago)

  Vulnerabilities has been mentioned in this article.

  CVE-2026-45498
  source