Full Report
Revenge is a dish best served code
Analysis Summary
# Vulnerability: "RoguePlanet" Windows Defender Local Privilege Escalation
## CVE Details
- **CVE ID**: Pending (Zero-day disclosure)
- **CVSS Score**: Estimated 7.8 (High) - based on typical LPE metrics
- **CWE**: CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization - 'Race Condition')
## Affected Systems
- **Products**: Microsoft Windows, Microsoft Defender
- **Versions**: Windows 10 and Windows 11 (All versions updated through June 2026 Patch Tuesday)
- **Configurations**: Default installations where Microsoft Defender is active.
## Vulnerability Description
RoguePlanet is a race condition vulnerability within Microsoft Defender. The flaw resides in how the security engine handles specific file operations or shared resources. An attacker who successfully wins the race condition can manipulate privileged processes to escalate their permissions from a standard user to SYSTEM-level control.
## Exploitation
- **Status**: PoC available; validated by third-party researchers (Tharros Labs).
- **Complexity**: Medium (requires winning a race condition; reported as not 100% reliable but functional).
- **Attack Vector**: Local (requires prior access to the target machine).
## Impact
- **Confidentiality**: High (Full access to system files and data)
- **Integrity**: High (Ability to modify system configuration and bypass security controls)
- **Availability**: High (Ability to disable security services or crash the system)
## Remediation
### Patches
- **None available**: As of the report date (June 10, 2026), there is no official patch from Microsoft. The vulnerability is currently under investigation by the vendor.
### Workarounds
- **Strict Access Control**: Limit local user access and the ability to execute untrusted code on sensitive systems.
- **Endpoint Protection**: Use third-party EDR/AV solutions that may detect the behavioral patterns of the exploit (e.g., ThreatLocker has indicated active monitoring/assessment).
## Detection
- **Indicators of Compromise**:
- Unexpected SYSTEM-level processes spawned by standard user accounts.
- Repeated, rapid file access attempts or crashes related to Microsoft Defender services (MsMpEng.exe).
- **Detection methods and tools**:
- Monitor for the execution of the published PoC code available at GitHub (NightmareEclipse/RoguePlanet).
- Review System and Security event logs for unauthorized privilege transitions.
## References
- **Researcher PoC**: hxxps[://]git[.]projectnightcrawler[.]dev/NightmareEclipse/RoguePlanet
- **Researcher Blog**: hxxps[://]deadeclipse666[.]blogspot[.]com/
- **Related CVE context**: hxxps[://]msrc[.]microsoft[.]com/update-guide/vulnerability/CVE-2026-45585
- **Expert Validation**: hxxps[://]infosec[.]exchange/@wdormann/116722435763533255