A security researcher operating under the alias Chaotic Eclipse has publicly disclosed two Windows zero-day vulnerabilities affecting BitLocker encryption and the Collaborative Translation Framework (CTFMON), designated YellowKey and GreenPlasma respectively.

YellowKey targets Microsoft's BitLocker disk encryption feature, enabling attackers to bypass full-disk encryption protections. BitLocker forms a core component of Windows security architecture, particularly for organizations managing sensitive data. Circumventing this encryption exposes encrypted volumes to unauthorized access without requiring the decryption key. The implications extend across enterprise environments where BitLocker serves as a mandatory control for data protection compliance.

GreenPlasma exploits the CTFMON process to achieve privilege escalation from standard user to administrator-level access. CTFMON handles text input and linguistic services in Windows. A successful exploitation chain permits attackers to elevate permissions and execute arbitrary code with system-level privileges, granting complete system control.

Eclipse previously disclosed three Microsoft Defender vulnerabilities through similar public channels, establishing a pattern of responsible but direct vulnerability disclosure. The researcher's methodology contrasts with coordinated disclosure practices, opting instead for public revelation to accelerate patching timelines.

The zero-days present layered attack opportunities. An attacker could leverage GreenPlasma to escalate privileges, then deploy YellowKey techniques to extract encrypted data from BitLocker-protected drives. This combination creates a potent post-compromise path for data exfiltration.

Microsoft has not yet issued patches or official acknowledgment of either vulnerability. Organizations running unpatched Windows systems face immediate risk. Administrators should prioritize system hardening measures: enforce strong BitLocker passwords, implement application whitelisting to restrict CTFMON modification, and deploy behavioral detection rules monitoring privilege escalation attempts targeting system processes.

The public disclosure timeline remains unclear. Organizations operating Windows