SB2025061060 - Privilege escalation in Insyde H2O UEFI
Published: June 10, 2025
Security Bulletin ID
SB2025061060
Severity
Low
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Exposed dangerous method or function (CVE-ID: CVE-2025-4275)
The vulnerability allows an attacker to escalate privileges on the system.
The vulnerability exists due to usage of an unprotected NVRAM variable. An attacker with physical access to the system can inject their own certificate in this variable and subsequently run arbitrary firmware (signed by the injected certificate) during the early boot process within the UEFI environment.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.