CVE-2025-20027
Received Received - Intake
Improper Input Validation in Intel UEFI WheaERST Enables Privilege Escalation

Publication date: 2026-03-10

Last updated on: 2026-03-10

Assigner: Intel Corporation

Description
Improper input validation in the UEFI WheaERST 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 escalation of privilege. This result may potentially occur via local access when attack requirements are 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 (none), integrity (none) and availability (none) 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
2026-06-14
NVD
CVE-2025-20027
EUVD
EUVD-2025-208544
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
intel uefi_wheaerst *
Helpful Resources
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 involves improper input validation in the UEFI WheaERST module on certain Intel reference platforms. It may allow a system software adversary who already has privileged user access, combined with a high complexity attack, to escalate their privileges further. The attack can potentially be executed locally without requiring special internal knowledge or user interaction.

Impact Analysis

The vulnerability can impact the confidentiality, integrity, and availability of the vulnerable system at a high level. This means an attacker could potentially gain unauthorized access, alter system data or operations, and disrupt system functionality.

Compliance Impact

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