CVE-2020-28573
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 · uneditedAn improper access control information disclosure vulnerability in Trend Micro Apex One and OfficeScan XG SP1 could allow an unauthenticated user to connect to the product server and reveal the total agents managed by the server.
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 confidenceThis vulnerability in Trend Micro Apex One and OfficeScan XG SP1 allows an unauthenticated user to connect to the product server and obtain information about the total number of agents being managed. The issue stems from improper access control that fails to require authentication before disclosing this agent count metric.
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= 2019= xgCVSS 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
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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 checksWork through these to decide whether this CVE applies to you.
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Identify installed product and versionCheck the installed version of Trend Micro Apex One or OfficeScan XG in the product console or installed programs list. Compare against affected versions: Apex One 2019 or OfficeScan XG.Affected if The installed version is Apex One 2019 or OfficeScan XG.
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Determine if management interface is network-exposedCheck network configuration to see if the Trend Micro management console port (typically 443 or 4343) is accessible from untrusted networks. Use netstat or firewall rules to identify listening ports and their exposure.Affected if The management console port is open to untrusted or external networks.
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Test for unauthenticated agent count disclosureAttempt to access the management interface without providing credentials. If the server responds with an HTTP status that does not require login and displays agent management information, the vulnerability may be present.Affected if The management console is accessible without authentication and returns agent count or management statistics.
You are affected if your environment runs Apex One 2019 or OfficeScan XG and the management interface is accessible without authentication, allowing unauthenticated disclosure of the managed agent count.
Generated from the published advisory. Verify against your own configuration.
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.
From vendor dataApply the vendor-supplied patch to enforce proper authentication before allowing access to management information. Until patched, network-segment the server and restrict access to trusted internal systems only.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-28573 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-28573 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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