High severity · published Jun 19, 2026
CVE-2025-71326
AVAST Antivirus 25.11 Unquoted Service Path Privilege Escalation
7.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
AVAST Antivirus · Avast
25.11 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-71326
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-71326
www.avast.com
https://www.avast.com/
www.exploit-db.com
https://www.exploit-db.com/exploits/52510
www.vulncheck.com
https://www.vulncheck.com/advisories/avast-antivirus-unquoted-service-path-privilege-escalation
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