CVE-2020-12116
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 OpManager Stable build before 124196 and Released build before 125125 allows an unauthenticated attacker to read arbitrary files on the server by sending a crafted request.
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 OpManager contains an unauthenticated arbitrary file read vulnerability in builds before 124196 (Stable) and 125125 (Released). Attackers can craft malicious requests to read any file on the server filesystem, potentially exposing sensitive configuration files, credentials, or source code.
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<= 12.3= 12.4= 12.5CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 OpManager installation and versionLocate the OpManager installation directory and locate the version or build file (commonly version.txt, buildinfo, or similar release metadata within the OpManager home directory)Affected if The installed build number is less than 124196 (Stable release) or less than 125125 (Released version), or the version displays as 12.3, 12.4, or 12.5 without a build number in the safe range
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Check the product build numberAccess the OpManager web interface and navigate to the About or Support page, or check the build.properties file in the OpManager/conf directoryAffected if The build number shown is below 124196 or 125125 depending on the release track
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Verify the exact version stringIn the OpManager administration console, locate the version information typically found under Help > About or the dashboard summaryAffected if The version is reported as 12.3.x, 12.4.x, or 12.5.x where the build is earlier than the fixed releases
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Confirm network exposureDetermine if the OpManager web interface is accessible from untrusted networks (check firewall rules, reverse proxy configurations, or direct internet exposure)Affected if OpManager is reachable from networks outside the trusted administrative zone and the version is vulnerable
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Review access logs for suspicious file read patternsExamine HTTP access logs in OpManager/logs directory for requests containing directory traversal patterns (such as ../../) targeting sensitive pathsAffected if Unauthenticated requests with traversal sequences accessing system files are present in the logs
If OpManager is installed with a version of 12.3, 12.4, or 12.5 or a build number below 124196 (Stable) or 125125 (Released), and the interface is network-accessible, the environment is affected by this unauthenticated arbitrary file read vulnerability.
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 dataUpdate OpManager to Stable build 124196 or Released build 125125 or later. As a temporary compensating control, restrict network access to the OpManager interface to trusted IPs only.
- Consultation2.0 h
- Implementation3.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-12116 — 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-2020-12116 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