8.5
HIGH CVSS 4.0
CVE-2025-71326
AVAST Antivirus 25.11 Unquoted Service Path Privilege Escalation
Description

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.

INFO

Published Date :

June 19, 2026, 2:16 p.m.

Last Modified :

June 19, 2026, 2:16 p.m.

Remotely Exploit :

No

Source :

VulnCheck
Affected Products

The following products are affected by CVE-2025-71326 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Avast antivirus
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 83251b91-4cc7-4094-a5c7-464a1b83ea10
CVSS 4.0 HIGH 83251b91-4cc7-4094-a5c7-464a1b83ea10
Solution
Remediate unquoted service path by quoting the path or removing unnecessary spaces.
  • Quote the service path to prevent injection.
  • Remove spaces from the service path.
  • Apply vendor patches or updates when available.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-71326 vulnerability anywhere in the article.

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.