CVE-2025-3500: Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation
Published Dec 1, 2025
·Updated
Integer Overflow or Wraparound vulnerability in Avast Antivirus (25.1.981.6) on Windows allows Privilege Escalation.This issue affects Antivirus: from 25.1.981.6 before 25.3.
Affected Software
3 affected components
Avast Antivirus>25.1.981.6, <25.3
All of the following
Avast Antivirus>=25.1.981.6<25.3
Microsoft Windows
Remediation
Information
Upgrade to version 25.3 (or newer) released 01/APR/2025
Event History
Dec 1, 2025
CVE Published
via MITRE·04:09 PM
Data Sourced
via MITRE·04:09 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·04:15 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-3500?
CVE-2025-3500 is classified as a privilege escalation vulnerability.
2
How do I fix CVE-2025-3500?
To fix CVE-2025-3500, update Avast Antivirus to version 25.3 or later.
3
What versions of Avast Antivirus are affected by CVE-2025-3500?
CVE-2025-3500 affects Avast Antivirus versions from 25.1.981.6 before 25.3.
4
What type of vulnerability is CVE-2025-3500?
CVE-2025-3500 is an integer overflow or wraparound vulnerability.
5
Can CVE-2025-3500 lead to exploitation?
Yes, CVE-2025-3500 can allow an attacker to escalate privileges on the affected system.