What is CVE-2025-71326?

CVE-2025-71326 is a high-severity vulnerability in Avast Antivirus, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2026-06-19.

How severe is CVE-2025-71326?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Avast Antivirus

CVE-2025-71326

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 s…

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Avast Antivirus — versions 25.11

Weakness classification (CWE)

CWE-428 — Unquoted Search Path or Element

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2025-71326?: CVE-2025-71326 is a high-severity vulnerability in Avast Antivirus, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2026-06-19.
How severe is CVE-2025-71326?: High severity. CVSS v3 base score is 7.8 out of 10.