What is CVE-2025-53378?

CVE-2025-53378 is a high-severity vulnerability in Microsoft Windows, classified under Missing Authentication for Critical Function. CVSS score: 7.6/10. Published 2025-07-10.

How severe is CVE-2025-53378?

High severity. CVSS v3 base score is 7.6 out of 10.

Auth bypass in Microsoft Windows

CVE-2025-53378

A missing authentication vulnerability in Trend Micro Worry-Free Business Security Services (WFBSS) agent could have allowed an unauthenticated attacker to remotely take control of the agent on affected installations. Also note: this vu…

Vulnerability class: Broken Authentication

EPSS: 0.006 (46.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H.

Affected products

Microsoft Windows
Trendmicro Worry-free_business_security_services
Trend Micro, Inc. Micro Worry-free Business Security Services — versions SaaS

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

security@trendmicro.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-53378?: CVE-2025-53378 is a high-severity vulnerability in Microsoft Windows, classified under Missing Authentication for Critical Function. CVSS score: 7.6/10. Published 2025-07-10.
How severe is CVE-2025-53378?: High severity. CVSS v3 base score is 7.6 out of 10.