CVE-2025-71326

AVAST Antivirus 25.11 Unquoted Service Path Privilege Escalation

Published Jun 19, 2026 CVSS 4.0 · 8.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Avast avast Antivirus Free
CPEs cpe:2.3:a:avast:avast_antivirus_free:25.11:*:*:*:*:*:*:*
Vendors & Products Avast avast Antivirus Free
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Avast
Avast avast Antivirus
Vendors & Products Avast
Avast avast Antivirus
Type Values Removed Values Added
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.
Title AVAST Antivirus 25.11 Unquoted Service Path Privilege Escalation
Weaknesses CWE-428
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Jul 14, 2026, 10:26 PM
Reserved
Jun 8, 2026, 8:44 PM
Status
Awaiting Analysis
Published
Jun 19, 2026, 3:16 PM
Modified
Oct 6, 2026, 10:10 PM