CVE-2021-31531
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 ServiceDesk Plus MSP before 10521 is vulnerable to Server-Side Request Forgery (SSRF).
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 ServiceDesk Plus MSP versions before 10521 contain a Server-Side Request Forgery (SSRF) vulnerability. This flaw allows remote attackers to make the application server perform arbitrary requests to internal or external resources, potentially bypassing network restrictions and accessing sensitive internal services.
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< 10.5= 10.5CVSS 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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Identify ServiceDesk Plus MSP versionLog into the ServiceDesk Plus MSP admin console and navigate to the About or Version section (typically found in Admin > General Settings or Help > About). Alternatively, check the version.txt or versioninfo file in the installation directory.Affected if The displayed version is 10.5 or any version lower than 10.5 (the vulnerable range includes versions < 10.5 and = 10.5).
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Confirm the build numberIn the same About section, note the full build number or patch version. Compare it against the fixed build 10521.Affected if The build number is lower than 10521, indicating an unpatched installation.
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Verify web interface exposureDetermine if the ServiceDesk Plus MSP web interface is accessible from the network. This vulnerability can be exploited through HTTP requests to the application.Affected if The web interface is externally accessible without proper network segmentation, allowing potential attackers to trigger SSRF requests.
You are affected if your installed ServiceDesk Plus MSP version is 10.5 or below (build < 10521) and the web interface is network-accessible, as the SSRF flaw allows attackers to force your server to make arbitrary requests to internal or external resources.
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.
dbcve · scoped10.5
Upgrade to ServiceDesk Plus MSP version 10521 or later to remediate this vulnerability.
ServiceDesk Plus MSP 10.5 build 10521 or later
- Download ServiceDesk Plus MSP version 10.5 build 10521 or later from the official ManageEngine website (www.manageengine.com)
- Back up the current ServiceDesk Plus MSP database and configuration files
- Stop the ServiceDesk Plus MSP service
- Install the upgraded version following the standard upgrade procedure
- Restart the ServiceDesk Plus MSP service
- Verify the application is running correctly and the SSRF vulnerability is remediated
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation2.0 h
- Testing4.0 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 $3,072.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-31531 — 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-2021-31531 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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