Qualys details BlueHammer (CVE-2026-33825), an eight-stage Windows Defender privilege escalation chain reaching SYSTEM. Same version, different risk: why version https://deafnews.it/en/article/bluehammer-shatters-version-scanning-the-same-defender-can-be-harmless-or-fatal
DeafNewsBlueHammer Shatters Version Scanning: The Same Defender Can Be Harmless or Fatal | DeafNewsQualys published a full technical analysis of BlueHammer (CVE-2026-33825) on October 21, 2026, an eight-stage local privilege escalation chain that weaponizes trusted Windows Defender components to reach SYSTEM and potentially compromise a domain, exposing the inadequacy of version-based risk prioritization.