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CRITICAL · 9.0

CVE-2025-3500

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.

Vulnerability 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.

CVSS Score

9.0

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
AvastAntivirus>= 25.1.981.6, < 25.3
MicrosoftWindows-

Related Weaknesses (CWE)

CWE-190

References

FAQ

What is CVE-2025-3500?

CVE-2025-3500 is a vulnerability with a CVSS score of 9.0 (CRITICAL). 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.

How severe is CVE-2025-3500?

CVE-2025-3500 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-3500?

Check the references section above for vendor advisories and patch information. Affected products include: Avast Antivirus, Microsoft Windows.