Worry-Free Business Security
CVE-2025-53378: Missing authentication in Trend Micro Worry-Free Business Security Services
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.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Trend Micro Worry-Free Business Security Services SaaS | 6.7.3954 / 14.3.1299 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 12 Oct 2026.