CVE-2021-37920
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 · uneditedZoho ManageEngine ADManager Plus version 7110 and prior allows unrestricted file upload which leads to remote code execution.
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 confidenceZoho ManageEngine ADManager Plus versions 7110 and prior contains an unrestricted file upload vulnerability that allows unauthenticated attackers to upload malicious files to the server and execute them remotely, achieving remote code execution.
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< 7.1= 7.1CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Locate the ADManager Plus installationCheck common installation directories such as C:\ManageEngine\ADManager Plus on Windows or /opt/ManageEngine/ADManagerPlus on Linux. Look for the ADManager Plus executable or service.Affected if ADManager Plus is installed on the system
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Identify the installed versionWithin the installation directory, locate the version file or check the application properties. The build number (such as 7110) is typically displayed in the About section of the web interface or in a version.info file in the installation root.Affected if The version displayed is 7110 or any version number lower than 7110 (for example, 7100, 7000, etc.)
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Verify the management web interface is accessibleAttempt to access the ADManager Plus web interface on the configured port (default 8080 or 8443). Check if the login page loads without authentication.Affected if The web interface is reachable and does not require authentication to reach the upload functionality
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Confirm network exposureDetermine if the ADManager Plus port is bound to a public or exposed IP address rather than localhost only, or if the firewall permits external access to the management port.Affected if The management interface is accessible from untrusted networks or the internet
If the installed version is 7110 or prior AND the web interface is accessible to unauthenticated users, the system is vulnerable to remote code execution via unrestricted file upload.
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 data7.1
Upgrade to a version newer than 7110 following Zoho's official patch release, and restrict network exposure of the management interface.
- Consultation3.0 h
- Implementation3.0 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-2021-37920 — 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-2021-37920 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
- No spam, self-promotion, credentials, or personal data