SB2025122708 - Lenovo update for TianoCore EDK II BIOS
Published: December 27, 2025
Security Bulletin ID
SB2025122708
CSH 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 vulnerability.
1) Uncaught exception (CVE-ID: CVE-2025-3770)
CWE-ID: CWE-248 - Uncaught Exception
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
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.