BitLocker bypass and privilege escalation exploits now public

A security researcher has released working exploit code for two zero-day vulnerabilities in Microsoft Windows. The flaws, designated YellowKey and GreenPlasma, allow attackers to bypass BitLocker encryption and escalate privileges on affected systems. No patches are currently available.

YellowKey exploits a weakness in how Windows handles BitLocker-protected drives, granting unauthorized access to encrypted volumes. GreenPlasma targets privilege escalation, enabling attackers with limited access to gain elevated system rights. Both exploits are now publicly documented with proof-of-concept code, lowering the barrier for exploitation.

The disclosure follows a pattern of unpatched Windows vulnerabilities receiving public attention before vendor remediation. Organizations relying on BitLocker as a primary encryption control face immediate exposure. The researcher published the exploits on BleepingComputer, a widely read cybersecurity news site, ensuring broad visibility among both defenders and adversaries.

• 01Enterprises using BitLocker face immediate risk of unauthorized data access on encrypted drives.
• 02Threat actors now have public exploit code, reducing time and skill required for attacks.
• 03Compliance frameworks relying on BitLocker encryption may require interim control adjustments.
• 04IT teams must prioritize patching once Microsoft releases fixes; no current remediation exists.