---
id: CVE-2025-7017
title: >-
  Heap buffer out-of-bounds read vulnerability in Avira Antivirus engine when
  scanning a malformed Windows MSI file may allow Local Execution of Code or
  Denial-of-Service of the antivirus engine process.


  This issue affects Avira Antivirus…
summary: >-
  Heap buffer out-of-bounds read vulnerability in Avira Antivirus engine when
  scanning a malformed Windows MSI file may allow Local Execution of Code or
  Denial-of-Service of the antivirus engine process.


  This issue affects Avira Antivirus…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-125
published: '2026-06-12'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T21:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-7017'
references:
  - url: 'https://www.gendigital.com/us/en/contact-us/security-advisories/'
    label: security@nortonlifelock.com
tags:
  - nvd
epss: 0.00131
epssPercentile: 0.02278
ingestedAt: '2026-09-30T21:25:07.745Z'
---

## Overview

Heap buffer out-of-bounds read vulnerability in Avira Antivirus engine when scanning a malformed Windows MSI file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process.

This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.56.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.