CVE-2025-3500

critical

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.

References

https://github.com/chicken3962/CVE-2025-3500-Poc

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

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-200018

Details

Source: Mitre, NVD

Published: 2025-12-01

Updated: 2026-09-26

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H