What’s Vulnerable › Vulnerabilities

CVE-2025-71326: AVAST Antivirus 25.11 Unquoted Service Path Privilege Escalation

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-19 · updated 2026-10-06
• Weakness: CWE-428

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.

Affected products

• Avast Antivirus: 25.11

References

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

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