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Intel® Processor Advisory

Intel ID: INTEL-SA-00528
Advisory Category: Hardware
Impact of vulnerability: Escalation of Privilege
Severity rating: HIGH
Original release: 11/09/2021
Last revised: 11/09/2021


A potential security vulnerability in some Intel® Processors may allow escalation of privilege.  Intel is releasing firmware updates to mitigate this potential vulnerability.

Vulnerability Details:

CVEID: CVE-2021-0146

Description: Hardware allows activation of test or debug logic at runtime for some Intel(R) processors which may allow an unauthenticated user to potentially enable escalation of privilege via physical access.

CVSS Base Score: 7.1 High


Affected Products:


Chipset/SOC or Processor


Platform ID

Desktop, Mobile

Intel® Pentium® Processor J Series, N Series

Intel® Celeron® Processor J Series, N Series

Intel® Atom® Processor A Series

Intel® Atom® Processor E3900 Series






Intel® Pentium® Processor N Series

Intel® Celeron® Processor N Series

Intel® Atom® Processor E3900 Series





Desktop, Mobile

Intel® Pentium® Processor Silver Series/ J&N Series​



Desktop, Mobile

Intel® Pentium® Processor Silver Series/ J&N Series​ - Refresh




Intel® Atom® Processor C3000





Intel recommends that users of affected Intel® Processors update to the latest version provided by the system manufacturer that addresses these issues.


This vulnerability was researched and reported by Mark Ermolov and Dmitry Sklyarov (Positive Technologies) and Maxim Goryachy (independent).

Intel would like to thank its employees Chandni Bhowmik and Ilya Wagner for identifying and developing the Proof of Concept (POC) for CVE-2021-0146 on Intel® Pentium® Processor Silver Series/ J&N Series and Intel® Pentium® Processor Silver Series/ J&N Series Refresh Processor Family.

Intel, and nearly the entire technology industry, follows a disclosure practice called Coordinated Disclosure, under which a cybersecurity vulnerability is generally publicly disclosed only after mitigations are available.

Revision History

Revision Date Description
1.0 11/09/2021 Initial Release

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