CVE-2026-20709

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Summary

CVECVE-2026-20709
StatePUBLISHED
Assignerintel
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-08 19:25:12 UTC
Updated2026-04-08 21:26:13 UTC
DescriptionUse 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.

Risk And Classification

Primary CVSS: v4.0 5.8 MEDIUM from [email protected]

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.000170000 probability, percentile 0.041180000 (date 2026-04-14)

Problem Types: CWE-1394 | Escalation of Privilege | CWE-1394 Use of Default Cryptographic Key

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary5.8MEDIUMCVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/C...
4.0CNACVSS5.8MEDIUMCVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N
3.1[email protected]Secondary6.6MEDIUMCVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
3.1CNACVSS6.6MEDIUMCVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N

CVSS v4.0 Breakdown

Attack Vector
Physical
Attack Complexity
High
Attack Requirements
Present
Privileges Required
High
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Sub Conf.
High
Sub Integrity
High
Sub Availability
None

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Physical
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na IntelR PentiumR Processor Silver Series IntelR CeleronR Processor J Series IntelR CeleronR 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. affected See references Not specified

References

ReferenceSourceLinkTags
intel.com/content/www/us/en/security-center/advisory/intel-sa-00609.html [email protected] intel.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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