CVE-2025-3500
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-01

Last updated on: 2026-02-06

Assigner: NortonLifeLock Inc.

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.
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Meta Information
Published
2025-12-01
Last Modified
2026-02-06
Generated
2026-06-16
AI Q&A
2025-12-01
EPSS Evaluated
2026-06-14
NVD
CVE-2025-3500
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
avast antivirus From 25.1.981.6 (inc) to 25.3 (inc)
avast antivirus 25.1.981.6
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-190 The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
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Executive Summary

This vulnerability is an Integer Overflow or Wraparound issue in Avast Antivirus versions from 25.1.981.6 before 25.3 on Windows. It allows a user to escalate their privileges, potentially gaining higher access rights than intended.

Impact Analysis

The vulnerability can lead to privilege escalation, meaning an attacker or malicious user could gain elevated permissions on the affected system. This could allow them to execute unauthorized actions, compromise system integrity, and access sensitive data.

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