CVE-2026-20709

Severity CVSS v4.0:

MEDIUM

Type:

Unavailable / Other

Publication date:

08/04/2026

Last modified:

08/04/2026

Description

Use of Default Cryptographic Key in the hardware for some Intel(R) Pentium(R) Processor Silver Series, Intel(R) Celeron(R) Processor J Series, Intel(R) Celeron(R) Processor N Series may allow an escalation of privilege. Hardware reverse engineer adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via physical access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts.

Impact

Vector 4.0

CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N CVSS v4.0 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N

Attack Vector (AV): Physical
Attack Complexity (AC): High
Attack Requirements (AT): Present
Privileges Required (PR): High
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): None
Availability (VA): None
Confidentiality (SC): High
Integrity (SI): High
Availability (SA): None

Base Score 4.0

5.80

Severity 4.0

MEDIUM

Vector 3.x

CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 6.60 MEDIUM
Vector: CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N

Attack Vector (AV): Physical
Attack Complexity (AC): High
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x

6.60

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-00609.html