The latest security information on Intel® products.

Intel® NUC and Intel® Compute Stick DCI Disable

Intel ID


Product family

Intel® NUC and Intel® Compute Stick based on 6th Gen Intel® Core™ processors

Impact of vulnerability 

Information Disclosure

Severity rating


Original release

Apr 03, 2017

Last revised

Apr 03, 2017


Intel® NUC and Intel® Compute Stick systems based on 6th Gen Intel® Core™ processors do not have DCI debug capability properly locked for BIOS only access. This would allow an attacker with physical possession of the system to potentially enable DCI from outside the BIOS. 


Intel® Direct Connect Interface (DCI) provides closed chassis access to perform debug for processing OEM and OEM customer returns.  DCI is was designed to be enabled only via BIOS settings.  Current settings in the referenced product family BIOS may allow an attacker with physical access to the system.

If an attacker were able to gain physical access to a system and enable DCI, it is possible they may gain access to personal information.  Intel views this risk as a Moderate (4.7) due to physical access and high privileges being required by an attacker.

  • Moderate (4.7) CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L

Affected products:


Model Number



Code Name



All versions before



Fixed BIOS Name






Cedar City












Cedar City












Skull Canyon













Swift Canyon









Intel recommends updating to the latest BIOS identified in Affected Products from or


Intel would like to thank Maxim Goryachy and Mark Ermolov from Positive Technologies.

Revision history:






Initial Release



Updated wording



Updated Models

CVE Name:  CVE-2017-5684

Legal Notices and Disclaimers

Intel provides these materials as-is, with no express or implied warranties.

All products, dates, and figures specified are preliminary based on current expectations, and are subject to change without notice.

Intel, processors, chipsets, and desktop boards may contain design defects or errors known as errata, which may cause the product to deviate from published specifications. Current characterized errata are available on request.

Intel technologies’ features and benefits depend on system configuration and may require enabled hardware, software or service activation. Performance varies depending on system configuration. No product or component can be absolutely secure. Check with your system manufacturer or retailer or learn more at

Some results have been estimated or simulated using internal Intel analysis or architecture simulation or modeling, and provided to you for informational purposes. Any differences in your system hardware, software or configuration may affect your actual performance.

Intel and the Intel logo are trademarks of Intel Corporation in the United States and other countries.

*Other names and brands may be claimed as the property of others.
Copyright © Intel Corporation 2022

Report a Vulnerability

If you have information about a security issue or vulnerability with an Intel branded product or technology, please send an e-mail to Encrypt sensitive information using our PGP public key.

Please provide as much information as possible, including:

  • The products and versions affected
  • Detailed description of the vulnerability
  • Information on known exploits

A member of the Intel Product Security Team will review your e-mail and contact you to collaborate on resolving the issue. For more information on how Intel works to resolve security issues, see:

For issues related to Intel's external web presence ( and related subdomains), please contact Intel's External Security Research team.

Need product support?

If you...

  • Have questions about the security features of an Intel product
  • Require technical support
  • Want product updates or patches

Please visit Support & Downloads.