CVE-2025-4275

SecureFlashDxe: Incorrect UEFI variable attributes check allows usage of invalid certificate

State: Published
Severity: 7.8 High
Published: Jun 11, 2025
Updated: Aug 14, 2025
Reserved: May 5, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H	Insyde

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
InsydeH2OInsyde Software	Kernel 5.2 to before 05.2A.16Affected Kernel 5.3 to before 05.39.16Affected Kernel 5.4 to before 05.47.16Affected Kernel 5.5 to before 05.55.16Affected Kernel 5.6 to before 05.62.16Affected Kernel 5.7 to before 05.71.16Affected

References

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