CVE-2025-3500

Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation

State: Published
Severity: 9.0 Critical
Published: Dec 1, 2025
Updated: Feb 26, 2026
Reserved: Apr 10, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	9.0 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H	NLOK

Weaknesses

CWE-190 Integer Overflow or Wraparound

Affected Products

Product	Versions
AntivirusAvast	25.1.981.6 to before 25.3Affected

References

https://www.gendigital.com/us/en/contact-us/security-advisories/

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