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CVE-2025-71326

AVAST Antivirus 25.11 Unquoted Service Path Privilege Escalation

CVSS 8.5 HIGHEPSS 0.1%CWE-428
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:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Avast · AVAST Antivirus
public PoCs found — 1
cve_referencewww.exploit-db.com/exploits/52510unverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://www.avast.com/https://www.exploit-db.com/exploits/52510https://www.vulncheck.com/advisories/avast-antivirus-unquoted-service-path-privilege-escalation