Hyperflex Hx Data PlatformOperating system · Cisco
CVE-2021-1497
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 HyperFlex HX could allow an unauthenticated, remote attacker to perform command injection attacks against 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 command injection vulnerabilities exist in the web-based management interface of Cisco HyperFlex HX hyperconverged infrastructure appliances. These flaws allow unauthenticated remote attackers to inject and execute arbitrary operating system commands on the affected device without any authentication credentials, due to insufficient input validation in the management web interface.
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
Hyperflex Hx Data PlatformOperating system
< 4.0\(2e\)>= 4.5, < 4.5\(2a\)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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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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Identify if Cisco HyperFlex HX is deployedLocate the HyperFlex cluster in your environment and confirm the management interface is accessible. Check network documentation or inventory systems for HyperFlex HX Data Platform installations.Affected if The environment contains Cisco HyperFlex HX systems with web-based management interface exposed.
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Determine the HyperFlex HX Data Platform versionAccess the HyperFlex Cluster Manager web interface, navigate to the Cluster > Settings > About section, or use the 'stcli cluster info' command via SSH to the cluster. Locate the Data Platform version number.Affected if The installed version is any release before 4.0(2e), or falls within the 4.5.x range prior to 4.5(2a). Compare your version against these affected ranges.
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Verify the web management interface is reachableConfirm the HyperFlex web management interface (typically ports 443 or 8443) is accessible from your network. Check firewall rules and access lists for the management network.Affected if The management interface is externally accessible or accessible from untrusted networks, allowing unauthenticated attackers to reach the vulnerable functions.
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Inspect for unauthorized access or command execution artifactsReview system logs for unusual commands, unexpected processes, or unfamiliar files in /var/log, /tmp, and user home directories. Check for new SSH keys, cron jobs, or modified system binaries.Affected if Evidence exists of unauthorized command execution, unexpected processes, or modification of system files indicating potential exploitation.
You are affected if you have Cisco HyperFlex HX Data Platform versions before 4.0(2e) or between 4.5 and 4.5(2a), with the management interface accessible to 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.
dbcve · scoped4.04.5
Apply the vendor-provided security patches from Cisco's security advisory for CVE-2021-1497. Until patches can be applied, restrict network access to the HyperFlex management interface using network segmentation or firewall rules to prevent unauthenticated external access.
Cisco HyperFlex HX Data Platform 4.0(2e) or 4.5(2a)
- 1. Identify the current installed version of Cisco HyperFlex HX Data Platform via the web management interface or CLI
- 2. Determine the appropriate upgrade path based on current version (either 4.0 branch or 4.5 branch)
- 3. Download the corresponding fixed release from Cisco: 4.0(2e) for 4.0 branch or 4.5(2a) for 4.5 branch
- 4. Schedule a maintenance window as upgrades require downtime
- 5. Follow Cisco's standard HyperFlex upgrade procedure via web UI or cluster management commands
- 6. After upgrade, verify the new version is installed and the web management interface is accessible
- 7. Confirm the vulnerability is remediated by checking the running version against the fixed releases
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Hyperflex Hx Data Platform
Exploited in the wild — priority engagement
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-1497 — 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-2021-1497 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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