Improper access control in the firmware for some 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.
History

Thu, 13 Aug 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Intel
Intel alias Checking Trusted Module
Vendors & Products Intel
Intel alias Checking Trusted Module

Wed, 12 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Title Firmware Access Control Flaw Enabling Local Privilege Escalation on Intel Xeon Processors

Tue, 11 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 17:00:00 +0000

Type Values Removed Values Added
Description Improper access control in the firmware for some 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.
Weaknesses CWE-284
References
Metrics cvssV4_0

{'score': 8.5, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: intel

Published:

Updated: 2026-08-12T14:48:43.537Z

Reserved: 2025-12-09T04:00:18.752Z

Link: CVE-2026-20898

cve-icon Vulnrichment

Updated: 2026-08-11T18:49:47.401Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-11T17:17:54.357

Modified: 2026-08-12T20:54:11.500

Link: CVE-2026-20898

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-13T10:40:34Z