Data Center Network ManagerApplication · Cisco
CVE-2021-1269
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 web-based management interface of Cisco Data Center Network Manager (DCNM) could allow an authenticated, remote attacker to view, modify, and delete data without proper authorization. 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 confidenceMultiple authorization flaws in Cisco DCNM's web-based management interface allow authenticated users to bypass proper authorization checks and perform unauthorized read, write, and delete operations on data. These are broken access control vulnerabilities (likely IDOR or privilege escalation) in the web API layer.
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
Data Center Network ManagerApplication
< 11.5\(1\)CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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 Cisco DCNM installationLocate the Cisco Data Center Network Manager installation in your environment - this is a Java-based application typically deployed on Windows or Linux servers with a web interface on port 8443 or similar.Affected if You find a running instance of Cisco DCNM in your environment
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Determine the installed DCNM versionAccess the DCNM web interface and navigate to the About or Help section to view the software version, or use the command line interface if available to query the installed version.Affected if The displayed version is lower than 11.5(1)
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Confirm web-based management interface is enabledVerify that the DCNM web-based management interface is accessible and active - this is the attack surface for CVE-2021-1269.Affected if The web management interface is accessible and running
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Check for unauthorized access indicatorsReview DCNM audit logs, access logs, or security event logs for any suspicious API calls, privilege escalation attempts, or unauthorized data access from authenticated users.Affected if You find evidence of authenticated users accessing data or functions outside their authorized scope
Your environment is affected if the installed Cisco DCNM version is below 11.5(1) and the web-based management interface is enabled and accessible to authenticated users.
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 data11.5
Apply the Cisco patch or upgrade to a fixed DCNM version as specified in the Cisco security advisory. Verify that proper authorization checks are enforced post-patch.
Fix this in Data Center Network Manager
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 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 $3,808.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-1269 — 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-2021-1269 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
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