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CVE-2025-4275

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CVE-2025-4275

Published: Jun 11, 2025

Modified: Aug 14, 2025

PUBLISHED

CVSS v3.1

7.8

HIGH

Description

A vulnerability in the digital signature verification process does not properly validate variable attributes which allows an attacker to bypass signature verification by creating a non-authenticated NVRAM variable. An attacker may to execute arbitrary signed UEFI code and bypass Secure Boot.

VendorProductVersions

Insyde Software

InsydeH2O

affected
Kernel 5.2 - < 05.2A.16
affected
Kernel 5.3 - < 05.39.16
affected
Kernel 5.4 - < 05.47.16
affected
Kernel 5.5 - < 05.55.16
affected
Kernel 5.6 - < 05.62.16

+1 more versions

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

References

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