CVE-2025-71326— AVAST Antivirus 25.11 Unquoted Service Path Privilege Escalation
Quick assessment
Affected
Avast AVAST Antivirus
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
avast antivirus是捷克Avast公司的一套杀毒软件。 AVAST Antivirus 25.11版本存在权限许可和访问控制问题漏洞，该漏洞源于SecureLine服务存在未加引号的服务路径漏洞，可能导致本地非特权用户利用该未加引号的二进制路径注入恶意可执行文件，从而提升至SYSTEM权限执行代码。
Possible ATT&CK Techniques 1 AI
T1546.004 · Unix Shell Configuration ModificationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Avast | AVAST Antivirus | 25.11 |
affected |
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I. Basic Information for CVE-2025-71326
Vulnerability Information
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Vulnerability Title
AVAST Antivirus 25.11 Unquoted Service Path Privilege Escalation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经引用的搜索路径或元素
Source: CVE Program / CVE List V5
Vulnerability Title
AVAST Antivirus 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
avast antivirus是捷克Avast公司的一套杀毒软件。 AVAST Antivirus 25.11版本存在权限许可和访问控制问题漏洞，该漏洞源于SecureLine服务存在未加引号的服务路径漏洞，可能导致本地非特权用户利用该未加引号的二进制路径注入恶意可执行文件，从而提升至SYSTEM权限执行代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Avast | AVAST Antivirus | 25.11 | - |
|
II. Public POCs for CVE-2025-71326
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2025-71326 (1)
Exploits & Public PoCs for CVE-2025-71326 (1)
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V. Comments for CVE-2025-71326
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