CVE-2025-4275

EUVD-2025-18070
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
InsydeCNA
7.8 HIGH
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
insydeinsydeh2o
𝑥
< 5.2A.16
CNA
insydeinsydeh2o
𝑥
< 5.39.16
CNA
insydeinsydeh2o
𝑥
< 5.47.16
CNA
insydeinsydeh2o
𝑥
< 5.55.16
CNA
insydeinsydeh2o
𝑥
< 5.62.16
CNA
insydeinsydeh2o
𝑥
< 5.71.16
CNA
References
https://www.insyde.com/security-pledge/sa-2025002/
https://www.kb.cert.org/vuls/id/211341