CVE-2021-25242Network attack vector

Unauthenticated build disclosure via missing access control

Published Feb 4, 2021 · Updated Aug 3, 2024

Improper access control in Trend Micro Apex One 2019 and SaaS, OfficeScan XG SP1, and WFBS 10.0 SP1 lets remote attackers read build data. The affected management-server interface returns product version and build information without first enforcing authentication, although the specific request handler and route are undisclosed. Unauthenticated network access to the management server is sufficient; the bounded impact is disclosure of product version and build identifiers.

CVSS severity5.3
Medium
EPSS probability2.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Trend Micro Apex One 2019 and SaaS, OfficeScan XG SP1, and WFBS 10.0 SP1 lets remote attackers read build data. The affected management-server interface returns product version and build information without first enforcing authentication, although the specific request handler and route are undisclosed. Unauthenticated network access to the management server is sufficient; the bounded impact is disclosure of product version and build identifiers.

The record

CVE
CVE-2021-25242
Published
Feb 4, 2021
Updated
Aug 3, 2024
Vendor
Trend Micro
Product
Trend Micro Worry-Free Business Security
Classifications
T1592.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 4, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0 SP1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Trend Micro · Trend Micro Worry-Free Business Securityversion=10.0 SP1
Trend Micro · Trend Micro Apex Oneversion=2019, SaaS
Trend Micro · Trend Micro OfficeScanversion=XG SP1

Published CVSS scores

5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1592.004Gather Victim Host Information: Client Configurations

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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