CVE-2025-53378: worry-free Missing Auth — Fix

Description

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 vulnerability only affected the SaaS client version of WFBSS only, meaning the on-premise version of Worry-Free Business Security was not affected, and this issue was addressed in a WFBSS monthly maintenance update. Therefore no other customer action is required to mitigate if the WFBSS agents are on the regular SaaS maintenance deployment schedule and this disclosure is for informational purposes only.

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CVSS v3.1 Score

7.6

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Weakness Type (CWE)

CWE-306 Missing Authentication

Affected Products

Vendor	Product	Versions
trendmicro	worry-free_business_security_services	6.7.0.0 — 6.7.3954
trendmicro	worry-free_business_security_services	14.0.0 — 14.3.1299
microsoft	windows	All

References

Advisories & Patches

https://success.trendmicro.com/en-US/solution/KA-0019936

Frequently Asked Questions

What is 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 vulnerability only affected the SaaS client version of WFBSS only, meaning the on-premise version of Worry-Free Business Security was not affected, and this issue was addressed in a WFBSS monthly maintenance update. Therefore no other customer action is required to mitigate if the WFBSS agents are on the regular SaaS maintenance deployment schedule and this disclosure is for informational purposes only. It has a CVSS v3.1 base score of 7.6 (HIGH).

How severe is CVE-2025-53378? +

CVE-2025-53378 has a CVSS v3.1 score of 7.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-53378? +

CVE-2025-53378 affects products from microsoft, trendmicro, specifically: windows, worry-free_business_security_services. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-53378? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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