SB2025122705 - Lenovo update for MediaTek 2025-11 WLAN
Published: December 27, 2025
Security Bulletin ID
SB2025122705
Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Heap-based Buffer Overflow (CVE-ID: CVE-2025-20728)
The vulnerability allows a local application to execute arbitrary code.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can execute arbitrary code.
2) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2025-20740)
The vulnerability allows a local application to execute arbitrary code.
The vulnerability exists due to a race condition within wlan. A local application can execute arbitrary code.
Remediation
Install update from vendor's website.