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CVE-2026-20898

Improper access control in N/a In Alias Checking Trusted Module For Some Intel(R) Xeon(R) Processors May Allow An Escalation Of Privilege. Startup Code And SMM Adversary With A Privileged User Combined With A High Complexity Attack May Enable Escalation Of Privilege. This Result May Potentially Occur Via Local Access When Attack Requirements Are Not Present Without Special Internal Knowledge And Requires No User Interaction. The Potential Vulnerability May Impact The Confidentiality (high), Integrity (high) And Availability (none) Of The Vulnerable System, Resulting In Subsequent System Confidentiality (high), Integrity (high) And Availability (none) Impacts.

CVSS score

8.5

EPSS probability

%0.1

Risk score

0.0

Published

2 mo ago

Vulnerability Timeline (Change History)

CVE-2026-20898 historical changes made to the vulnerability by NVD, CISA and MITRE:

DateActor / SourceAction / DescriptionTypePrevious valueNew value
31.08.2026nvd@nist.govInitial Analysis & CVSS Vector AssignmentCVSS V3.1—CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
11.08.2026CISA CoordinatorSSVC Risk Re-assessmentSSVC / KEVexploitation: noneexploitation: none
11.08.2026MITRE / NVDNew CVE Record Received & IngestedCVE Created—CVE-2026-20898

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