SB20250908112 - InsydeH2O Kernel update for EDK2
Published: September 8, 2025
Security Bulletin ID
SB20250908112
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Uncaught exception (CVE-ID: CVE-2025-3770)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to unsafe handling of IDT register on SMM entry. A local user can trigger unexpected exceptions can execute arbitrary code with System Management Mode (SMM) privileges.
Remediation
Install update from vendor's website.