# 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.

- **Severity:** High 7.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H`)
- **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 available:** No
- **Published:** 10 Jul 2025
- **Updated:** 10 Jul 2025
- **Also known as:** GHSA-57q3-g47v-6hpr

## 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 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2025-53378?

It affects 1 product.


Products: 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.

## 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

- [CVE-2025-49487](https://insights.sbomify.com/CVE-2025-49487/): Other in Trend Micro Worry-Free Business Security Services (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-53378 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2025-53378 in the wild and no public exploit code.

Affected product: Trend Micro Worry-Free Business Security Services. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-53378/ (Markdown: https://insights.sbomify.com/CVE-2025-53378/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-53378
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-53378
- OSV: https://osv.dev/vulnerability/CVE-2025-53378

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-53378/
Summaries are generated and may contain mistakes; the official description above is the record.