PT-2026-50923 · Avast · Avast Antivirus

Milad Karimi · Published 2026-06-19 · Updated 2026-06-19 · CVE-2025-71326

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions AVAST Antivirus version 25.11

Description The SecureLine service contains an unquoted service path, which occurs when a service executable path contains spaces and is not enclosed in quotation marks. This allows local non-privileged users to execute code with elevated SYSTEM privileges by injecting malicious executables into the service configuration path.

Recommendations Update AVAST Antivirus version 25.11 to a version that fixes the unquoted service path in the SecureLine service.

Exploit

Fix

Weakness Enumeration

CWE-428

Related Identifiers

CVE-2025-71326

Affected Products

Avast Antivirus

References · 5

• 🔥 https://exploit-db.com/exploits/52510 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-71326 · Security Note
• https://avast.com · Note
• https://twitter.com/CVEnew/status/2068015563452920233 · Twitter Post
• https://vulncheck.com/advisories/avast-antivirus-unquoted-service-path-privilege-escalation · Note