CVE-2025-71326: Unquoted Search Path or Element in Avast AVAST Antivirus
AVAST Antivirus version 25.11 contains an unquoted service path vulnerability in its SecureLine service. This vulnerability allows local non-privileged users to execute code with SYSTEM-level privileges by exploiting the unquoted binary path in the service configuration. The issue enables privilege escalation on affected systems.
AI Analysis
Technical Summary
CVE-2025-71326 is an unquoted search path vulnerability in the SecureLine service of AVAST Antivirus 25.11. The unquoted service path allows local attackers to place malicious executables in locations that the service path resolves to, resulting in execution of code with elevated SYSTEM privileges. This vulnerability requires local access and does not require user interaction. It has a high CVSS 4.0 score of 8.5, reflecting its potential for privilege escalation with low attack complexity.
Potential Impact
Successful exploitation allows a local non-privileged user to execute arbitrary code with SYSTEM privileges, potentially leading to full system compromise. This elevates the attacker's permissions beyond their initial access level, posing a significant security risk on affected systems.
Mitigation Recommendations
No official patch or remediation has been confirmed as of the provided data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict local user access and monitor for suspicious activity related to the SecureLine service executable path.
CVE-2025-71326: Unquoted Search Path or Element in Avast AVAST Antivirus
Description
AVAST Antivirus version 25.11 contains an unquoted service path vulnerability in its SecureLine service. This vulnerability allows local non-privileged users to execute code with SYSTEM-level privileges by exploiting the unquoted binary path in the service configuration. The issue enables privilege escalation on affected systems.
CVSS v4.0
Score 8.5high
Affected software
pkg:github/avast/avast-antivirusRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-71326 is an unquoted search path vulnerability in the SecureLine service of AVAST Antivirus 25.11. The unquoted service path allows local attackers to place malicious executables in locations that the service path resolves to, resulting in execution of code with elevated SYSTEM privileges. This vulnerability requires local access and does not require user interaction. It has a high CVSS 4.0 score of 8.5, reflecting its potential for privilege escalation with low attack complexity.
Potential Impact
Successful exploitation allows a local non-privileged user to execute arbitrary code with SYSTEM privileges, potentially leading to full system compromise. This elevates the attacker's permissions beyond their initial access level, posing a significant security risk on affected systems.
Mitigation Recommendations
No official patch or remediation has been confirmed as of the provided data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict local user access and monitor for suspicious activity related to the SecureLine service executable path.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-06-08T20:44:31.210Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a355aaef198dc38c1711ec4
Added to database: 6/19/2026, 3:05:18 PM
Last enriched: 6/19/2026, 3:20:10 PM
Last updated: 6/19/2026, 4:28:18 PM
Views: 4
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