Ucs DirectorApplication · Cisco
CVE-2020-3249
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 · uneditedMultiple vulnerabilities in the REST API of Cisco UCS Director and Cisco UCS Director Express for Big Data may allow a remote attacker to bypass authentication or conduct directory traversal attacks on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
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 confidenceCVE-2020-3249 describes multiple vulnerabilities in the REST API of Cisco UCS Director and Cisco UCS Director Express for Big Data. The vulnerabilities allow remote attackers to either bypass authentication mechanisms or conduct directory traversal attacks on affected devices. The authentication bypass flaw enables unauthenticated attackers to access restricted resources, while the directory traversal vulnerability permits attackers to access files outside the web root folder by manipulating input paths.
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
Ucs DirectorApplication
= 6.0.0.0= 6.0.0.1= 6.0.1.0= 6.0.1.1= 6.0.1.2= 6.0.1.3= 6.5.0.0= 6.5.0.1= 6.5.0.2= 6.5.0.3= 6.5.0.4= 6.6.0.0
Ucs Director Express For Big DataApplication
<= 3.7.3.0CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 installed Cisco UCS productLocate and identify Cisco UCS Director or Cisco UCS Director Express for Big Data in your environment. Check installed software listings, appliance management interfaces, or documentation that tracks this product.Affected if The product is Cisco UCS Director or Cisco UCS Director Express for Big Data and is currently deployed.
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Determine installed versionUse the product's administrative console, CLI interface, or version lookup command to obtain the exact installed version number of Cisco UCS Director or Cisco UCS Director Express for Big Data.Affected if The installed version matches one of the affected versions: Cisco UCS Director versions 6.0.0.0, 6.0.0.1, 6.0.1.0, 6.0.1.1, 6.0.1.2, 6.0.1.3, 6.5.0.0, 6.5.0.1, 6.5.0.2, 6.5.0.3, 6.5.0.4, or 6.6.0.0; or Cisco UCS Director Express for Big Data version 3.7.3.0 or earlier.
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Check REST API accessibilityDetermine if the REST API endpoints for Cisco UCS Director are accessible from network locations outside the trusted administrative zone. Review firewall rules, ACLs, and network exposure settings that control access to the API ports.Affected if The REST API is exposed to untrusted networks or the internet without proper access controls.
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Review API access logsExamine API access logs for unusual or unauthorized REST API calls, particularly those attempting to access restricted endpoints or unusual file paths that may indicate exploitation attempts.
You are affected if Cisco UCS Director or Cisco UCS Director Express for Big Data is deployed and the installed version matches the listed affected versions with the REST API accessible to potential attackers.
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 dataApply the relevant Cisco firmware/software updates when available, or implement network segmentation and API access controls to restrict unauthorized access to the UCS Director REST API endpoints until patches can be deployed.
Fix this in Ucs Director
Scoped from the published advisory
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $9,504.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-3249 — 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-2020-3249 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
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