---
id: CVE-2025-71326
title: >-
  AVAST Antivirus 25.11 contains an unquoted service path vulnerability in the
  SecureLine service that allows local non-privileged users to execute code with
  elevated SYSTEM privileges
summary: >-
  AVAST Antivirus 25.11 contains an unquoted service path vulnerability in the
  SecureLine service that allows local non-privileged users to execute code with
  elevated SYSTEM privileges. Attackers can exploit the unquoted binary path in
  the…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-428
published: '2026-06-19'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T21:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-71326'
references:
  - url: 'https://www.avast.com/'
    label: disclosure@vulncheck.com
  - url: 'https://www.exploit-db.com/exploits/52510'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/avast-antivirus-unquoted-service-path-privilege-escalation
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00182
epssPercentile: 0.07044
ingestedAt: '2026-09-30T21:25:07.788Z'
---

## Overview

AVAST Antivirus 25.11 contains an unquoted service path vulnerability in the SecureLine service that allows local non-privileged users to execute code with elevated SYSTEM privileges. Attackers can exploit the unquoted binary path in the service configuration to inject malicious executables that execute with high-level system permissions.

## Remediation

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