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4.4

Avast Free Antivirus: Local Admin Can Disable Real-Time Protection

CVE-2025-10905 · published 11 months ago
Summary

A security issue in Avast Free Antivirus on Windows allows an attacker with administrative access to turn off real-time protection and self-defense features. This could leave your computer vulnerable to malware and other threats. Update to version 25.9 or later to fix the issue.

Original advisory text
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-defens...
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
4.4 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-693Protection Mechanism Failure
Timeline
Published11 Nov 2025
Updated26 Oct 2026
First seen7 Mar 2026
Sources
CVE-2025-10905 · NVD
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