Vulnerability in Insyde Software Insydeh2o
CVE-2025-4275
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 execu…
EPSS: 0.004 (31.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Insyde Software Insydeh2o — versions Kernel 5.2, Kernel 5.3, Kernel 5.4
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2025-4275?
- CVE-2025-4275 is a high-severity vulnerability in Insyde Software Insydeh2o, classified under CWE-284: IMPROPER ACCESS CONTROL. CVSS score: 7.8/10. Published 2025-06-11.
- How severe is CVE-2025-4275?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2025-4275 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.