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.
History

Wed, 30 Jul 2025 07:15:00 +0000

Type Values Removed Values Added
Description Running the provided utility changes the certificate on any Insyde BIOS and then the attached .efi file can be launched. 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.

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 9e-05}

epss

{'score': 0.0001}


Wed, 11 Jun 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 11 Jun 2025 02:30:00 +0000

Type Values Removed Values Added
References

Wed, 11 Jun 2025 00:45:00 +0000

Type Values Removed Values Added
Description Running the provided utility changes the certificate on any Insyde BIOS and then the attached .efi file can be launched.
Title SecureFlashDxe: Incorrect UEFI variable attributes check allows usage of invalid certificate
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Insyde

Published: 2025-06-11T00:25:17.737Z

Updated: 2025-08-14T05:58:07.245Z

Reserved: 2025-05-05T01:59:27.834Z

Link: CVE-2025-4275

cve-icon Vulnrichment

Updated: 2025-06-11T01:32:11.159Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-06-11T01:15:20.750

Modified: 2025-07-30T08:15:34.240

Link: CVE-2025-4275

cve-icon Redhat

No data.