CVE-2025-53378 Missing authorization in Trend Micro Worry-Free Business Security Services
Unauthenticated attackers can remotely take control of the Trend Micro Worry-Free Business Security Services agent, requiring SaaS clients to apply maintenance updates.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-53378?
CVE-2025-53378 is a high-severity missing authorization vulnerability in Trend Micro Worry-Free Business Security Services, published on 10 Jul 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2025-53378?
It affects 1 product.
Products include Trendmicro Worry-Free Business Security Services.
How do I fix CVE-2025-53378?
No fix has been published for CVE-2025-53378 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-53378 being exploited?
There is no known exploitation of CVE-2025-53378 in the wild and no public exploit code.
Other vulnerabilities in Trend Micro Worry-Free Business Security Services
Sources
Also known as GHSA-57q3-g47v-6hpr.