https://invaders.ie/resources/blog/vulnerability/windows-defender-zero-days-active-system-access-risk Invaders Security en 2026-04-17T08:07:40.240Z Leaked Windows Defender zero-days are already being used to gain SYSTEM access Windows Defender zero-day, RedSun zero-day, BlueHammer CVE-2026-33825, UnDefend exploit, Windows privilege escalation, SYSTEM access