Data Center Network ManagerApplication · Cisco
CVE-2021-1247
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 certain REST API endpoints of Cisco Data Center Network Manager (DCNM) could allow an authenticated, remote attacker to execute arbitrary SQL commands 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 · moderate confidenceMultiple SQL injection vulnerabilities exist in REST API endpoints of Cisco Data Center Network Manager (DCNM). An authenticated remote attacker can send specially crafted requests to affected API endpoints to execute arbitrary SQL commands on the underlying database.
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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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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Determine installed DCNM versionLog into the DCNM web interface and navigate to Administration > System Settings > About, or run 'dcnmpri -v' from the command lineAffected if The installed version is any release prior to 11.5(1)
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Confirm REST API is enabledCheck if the DCNM REST API service is running by accessing https://<dcnm-host>/rest/ and verifying a response is receivedAffected if The REST API endpoints are accessible and responding to requests
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Verify external authentication configurationReview the DCNM authentication settings under Administration > External Authentication or by inspecting the deployer.properties file in the DCNM installation directoryAffected if External or LDAP authentication is configured, allowing authenticated attackers to exploit the SQL injection
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Check network exposure of management interfaceReview firewall rules or network access lists to determine if the DCNM management interface (port 443/https) is exposed to untrusted networksAffected if The DCNM management interface is reachable from networks outside the trusted administrative zone
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Identify API audit logs for suspicious activityReview DCNM audit logs under Administration > Audit Logs or in /opt/dcnm/logs/ for SQL-like patterns or unusual query parameters in REST API callsAffected if Audit logs show anomalous SQL syntax or unexpected query patterns in API requests
The environment is affected if DCNM version is below 11.5(1) and the REST API interface is accessible to an authenticated attacker.
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 Cisco's official patches for DCNM. If patches are unavailable, restrict network access to DCNM management interfaces and review API endpoint access controls.
Fix this in Data Center Network Manager
Scoped from the published advisory
- Consultation4.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,040.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-1247 — 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-2021-1247 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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- Version or environment caveats, and links to real fixes
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