Cybersecurity News

BTR Reforged: Weaponizing Defender’s Remediation Driver as a Kernel Operation Primitive

August 20, 2026

Researchers found Microsoft Defender's signed remediation driver can be repurposed as a kernel-level attack primitive without exploits or memory corruption. By instructing the trusted driver to execute arbitrary file and registry operations from Ring 0, attackers gain powerful kernel access. The technique requires no vulnerabilities, leveraging a legitimate Microsoft component against itself.

• windows defender
• kernel exploitation
• driver abuse
• privilege escalation
• microsoft security
• vulnerability research