CVE-2025-20064
Received Received - Intake
Improper Input Validation in Intel UEFI Module Enables Privilege Escalation

Publication date: 2026-03-10

Last updated on: 2026-03-10

Assigner: Intel Corporation

Description
Improper input validation in the UEFI FlashUcAcmSmm module for some Intel(R) reference platforms may allow an escalation of privilege. System software adversary with a privileged user combined with a high complexity attack may enable local code execution. 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 (high) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (high) impacts.
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Meta Information
Published
2026-03-10
Last Modified
2026-03-10
Generated
2026-06-16
AI Q&A
2026-03-11
EPSS Evaluated
2026-06-15
NVD
CVE-2025-20064
EUVD
EUVD-2025-208548
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
intel uefi_flashucacmsmm *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
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Executive Summary

This vulnerability is caused by improper input validation in the UEFI FlashUcAcmSmm module on some Intel reference platforms. It may allow an escalation of privilege, meaning that a system software adversary who already has privileged user access could potentially execute local code with higher privileges. The attack is complex and requires local access, special internal knowledge, but no user interaction.

Impact Analysis

The vulnerability can impact the confidentiality, integrity, and availability of the affected system at a high level. This means sensitive information could be exposed or altered, and system operations could be disrupted, potentially leading to serious security breaches.

Compliance Impact

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