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Potential Intel® SGX Key Disclosure
Announcement ID:
2026-04-08-001
Issue:
On March 31, 2026, a researcher affiliated with Positive Technologies posted that he had “extracted the Global Wrapping Key from an instance of Intel Gemini Lake Platform."
Based on Intel analysis, the activity appears to extend previously addressed research. The researcher previously indicated that they were running tests on systems they have physical access to, which are not up to date with the latest mitigations and are not properly configured with Intel recommended Flash Descriptor write protection (which occurs as part of end of manufacturing by system manufacturers). Researchers are using previously mitigated vulnerabilities dating as far back as 2017 to gain access to an Intel Unlocked state (aka “Red Unlocked”). See “Additional Resources” for technical papers describing these issues.
In this latest posting, the researcher claims to have additionally identified a Global Wrapping Key, which is used to decrypt the device-specific Intel® Software Guard Extensions (Intel® SGX) key. This specific issue only impacts Intel Gemini Lake and Gemini Lake Refresh platforms using Intel SGX including products that have exited baseline servicing. Intel® Trust Domain Extensions (Intel® TDX) is not affected.
Potentially Affected Intel Platforms:
Product Collection |
CPUID |
Intel Pentium Processor Silver Series |
706A1, 706A8 |
Intel Celeron Processor J Series |
706A1, 706A8 |
Intel Celeron Processor N Series |
706A1, 706A8 |
Note: Intel platform CPUID 706A1 has exited the baseline servicing timeframe.
Resolution/Recommendations:
- Ensure the system manufacturer configured systems at the end of manufacturing to enable Intel® Firmware Version Control to help prevent this and other vulnerabilities.
- System manufacturers, complete End of Manufacturing process, set Manufacturing Mode to Disabled, and enable Intel® Firmware Version Control.
- Ensure all security mitigations provided by Intel are applied.
- Customers can use Intel’s open source CHIPSEC tool to verify the security configuration of their firmware.
- Intel will be updating the attestation system (Intel® SGX Provisioning Certification Service) for the potentially affected platform to reference the updated Security Advisory INTEL-SA-00609. More information regarding these updates can be found on the applicable SGX Forum post when available.
Additional Resources:
Intel® Management Engine Critical Firmware Update (Intel-SA-00086)
IPAS: Bug Bounty Bonus: Pentium®, Intel Atom®, and Celeron® Processors - Intel Community
Intel Converged Security Management Engine (CSME)
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