CVE-2025-10905: Avast Free Antivirus

Medium severity, CVSS 4.4. EPSS: 0.1% chance of exploitation in the next 30 days.

Collision in MiniFilter driver in Avast Software Avast Free Antivirus  before 25.9  on Windows allows a local attacker with administrative privileges to disable real-time protection and self-defense mechanisms.

Affected products

• Avast Free Antivirus: before 25.9 (fixed in 25.9)

Published 2025-11-11. Last modified 2026-06-17.