What’s Vulnerable › Vulnerabilities
CVE-2025-3500: Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-12-01 · updated 2026-09-26
- Weakness: CWE-190
Description
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 products
- Avast Antivirus: from 25.1.981.6 before 25.3 — fixed in 25.3
How to fix
Upgrade to a fixed version: Avast Antivirus 25.3. Check the vendor advisory for mitigations.
References
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