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Worry Free Business Security ServicesApplication · Trendmicro

CVE-2025-53378

CRITICAL · 9.8 CVSS v3.1 Published 2025-07-10
Fix available
A fix is available. Upgrade to 6.7.3954 / 14.3.1299 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A missing authentication vulnerability in Trend Micro Worry-Free Business Security Services (WFBSS) SaaS agent allowed unauthenticated remote attackers to take complete control of the agent, achieving remote code execution with high severity (CVSS 9.8).

MitigationNo action required; this vulnerability was already addressed in the WFBSS monthly maintenance update. Organizations should ensure WFBSS SaaS agents remain on the regular maintenance deployment schedule.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Worry Free Business Security ServicesApplication
Affected:>= 6.7.0.0, < 6.7.3954>= 14.0.0, < 14.3.1299

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify if WFBSS SaaS agent is installed
    On Windows, open Programs and Features or check the registry under HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall for entries named 'Trend Micro Worry-Free Business Security Services' or similar. On Mac, check /Applications for Trend Micro folders.
    Affected if The software is not found on the system, then this CVE does not apply.
  2. Determine the installed version
    Locate the WFBSS agent installation directory (typically under C:\Program Files\Trend Micro\ or check the program's properties in Add/Remove Programs). Note the full version number displayed, such as 6.7.x.x or 14.x.x.
    Affected if The version cannot be determined, treat it as potentially affected.
  3. Compare version against first affected range
    If the installed version begins with 6.7, verify whether it is >= 6.7.0.0 AND < 6.7.3954. Any version from 6.7.0.0 through 6.7.3953 is vulnerable.
    Affected if The installed 6.7.x version falls within this range, the system is affected.
  4. Compare version against second affected range
    If the installed version begins with 14.0 or higher, verify whether it is >= 14.0.0 AND < 14.3.1299. Any version from 14.0.0 through 14.3.1298 is vulnerable.
    Affected if The installed 14.x version falls within this range, the system is affected.
  5. Confirm agent is active
    Check if the WFBSS SaaS agent service or process is running. On Windows, open Task Manager or Services.msc and look for 'Trend Micro Worry-Free Business Security' services. On Mac, run 'ps aux | grep -i trend' in Terminal.
    Affected if The agent is installed and running on a vulnerable version, the environment is affected by this CVE.

Your environment is affected if the Trend Micro WFBSS SaaS agent is installed with a version in the range 6.7.0.0 to 6.7.3953 or 14.0.0 to 14.3.1298.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 6.7.3954 / 14.3.1299 or later
Fixed in 6.7.395414.3.1299
Interim mitigation

No action required; this vulnerability was already addressed in the WFBSS monthly maintenance update. Organizations should ensure WFBSS SaaS agents remain on the regular maintenance deployment schedule.

Recommended fix High confidence

Upgrade to WFBSS version 6.7.3954 or higher (for 6.7.x branch); or version 14.3.1299 or higher (for 14.x branch)

  1. 1. For SaaS customers: Verify that agents are enrolled in the regular monthly maintenance deployment schedule - no manual action required as patches are automatically applied.
  2. 2. For customers managing updates manually: Check current WFBSS agent version by navigating to the agent management console.
  3. 3. If running version 6.7.0.0 through 6.7.3953, upgrade to version 6.7.3954 or later.
  4. 4. If running version 14.0.0 through 14.3.1298, upgrade to version 14.3.1299 or later.
  5. 5. Verify successful deployment by confirming agent version in the management console after the update cycle.

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Worry Free Business Security Services Scoped from the published advisory
  • Consultation1.0 h
  • Review / QA1.0 h
2.0 hours of engineering $750
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-53378 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data