CVE-2021-29101
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 · uneditedArcGIS GeoEvent Server versions 10.8.1 and below has a read-only directory path traversal vulnerability that could allow an unauthenticated, remote attacker to perform directory traversal attacks and read arbitrary files on the system.
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 confidenceArcGIS GeoEvent Server versions 10.8.1 and below contains a path traversal vulnerability that allows unauthenticated remote attackers to use directory traversal sequences (e.g., '../') to access files outside the intended web root directory. This read-only access enables exposure of sensitive system files to remote, unauthenticated users.
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<= 10.8.1CVSS 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
- 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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Confirm ArcGIS GeoEvent Server is installedLocate ArcGIS GeoEvent Server through the Windows Services panel, or check for the GeoEvent Server installation directory under the ArcGIS installation pathAffected if GeoEvent Server is present on the system and the service is running
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Determine the installed GeoEvent Server versionAccess the GeoEvent Server Administrator Directory or check the installed programs list for the exact version numberAffected if The installed version is 10.8.1 or any version below 10.8.1
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Verify the GeoEvent Server web service is accessibleAttempt to access the GeoEvent Server REST API or web interface URL (typically ports 6080, 6443, or 6143)Affected if The web service is reachable from a network location without authentication
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Check for directory traversal exposureUsing a web request tool, send a test request with directory traversal sequences (such as ../../) to the GeoEvent Server endpoint to observe if file system access beyond the web root is permittedAffected if Requests with traversal patterns return content from directories outside the web root, indicating the vulnerability is present and exploitable
The environment is affected if ArcGIS GeoEvent Server version 10.8.1 or below is installed and its web interface is accessible, allowing unauthenticated path traversal requests to read sensitive files outside the web root.
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 dataUpgrade ArcGIS GeoEvent Server to a version above 10.8.1. If an upgrade is not immediately feasible, implement web application firewall rules or URL filtering to block directory traversal patterns, and ensure the web server runs with minimal file system permissions.
- Consultation4.0 h
- Implementation8.0 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-2021-29101 — 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-2021-29101 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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