CVE-2021-37423
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 ADSelfService Plus 6111 and prior is vulnerable to linked applications takeover.
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 · moderate confidenceZoho ManageEngine ADSelfService Plus version 6111 and prior contains a vulnerability that allows an attacker to take over linked or integrated applications. This could permit unauthorized access to dependent systems or applications connected to the ADSelfService Plus identity management platform.
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< 6.1= 6.1CVSS 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 ADSelfService Plus installation directoryIdentify the directory where ManageEngine ADSelfService Plus is installed. Common default paths include C:\ManageEngine\ADSelfService Plus (Windows) or /opt/ManageEngine/ADSelfService Plus (Linux). Check for running processes or services named 'ADSelfService Plus'.Affected if Installation directory cannot be found or the application is not installed.
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Determine installed product versionOpen the admin console and navigate to the About or Product Info section (typically accessible via the gear icon or Help menu). Alternatively, check for a version.txt, build.txt, or similar version file within the installation directory.Affected if Unable to locate version information through admin console or version files.
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Compare version to affected rangeCompare your installed version number to the affected range: version 6.1 (build 6111) and any version prior to 6.1. If using the admin console, the version is usually displayed as '6.1' or '6111' or similar build number.Affected if Installed version is 6.1 or 6111, or any version number less than 6.1 (for example, 6.0, 5.9, 5.x).
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Verify admin console accessibilityDetermine if the ADSelfService Plus admin console (default ports 8888 or 8889) is accessible from untrusted networks. Check firewall rules, reverse proxy configurations, or network exposure of the admin interface.Affected if Admin console is exposed to the internet or untrusted internal networks without proper network segmentation.
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Review integrated applicationsAccess the admin console and list all linked or integrated applications such as SAML connectors, OAuth configurations, Active Directory integrations, or other identity providers. Check for any unauthorized or unexpected integrations.Affected if Unexpected or unauthorized integrations appear in the configuration, or integrations exist and the product version is within the affected range.
A user is affected if ADSelfService Plus version 6.1 (build 6111) or any prior version is installed and the application has integrated applications or is network-accessible.
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 data6.1
Upgrade Zoho ManageEngine ADSelfService Plus to a version beyond 6111 that includes the security patch for this vulnerability.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-37423 — 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-2021-37423 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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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.
- 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