May 2026 Cybersecurity Roundup: NGINX RCE, Microsoft’s AI Bug Hunter, and Critical New Threats
May 2026's critical rundown: an 18-year-old NGINX rewrite RCE (CVE-2026-42945) enabling unauthenticated code execution, Microsoft's 138-flaw Patch Tuesday with 16 bugs found by its own MDASH AI, an Exim BDAT flaw, a BitLocker zero-day PoC fixed only on Windows 11, and the 150-package GemStuffer RubyGems campaign.