CVE-2021-43589
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 · uneditedDell EMC Unity, Dell EMC UnityVSA and Dell EMC Unity XT versions prior to 5.1.2.0.5.007 contain an operating system (OS) command injection Vulnerability. A locally authenticated user with high privileges may potentially exploit this vulnerability, leading to the execution of arbitrary OS commands on the Unity underlying OS, with the privileges of the vulnerable application. Exploitation may lead to an elevation of privilege.
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 confidenceDell EMC Unity storage systems contain an OS command injection vulnerability. A locally authenticated user with high privileges can exploit this to execute arbitrary OS commands on the underlying OS with the application's privileges, potentially achieving privilege escalation.
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< 5.1.2.0.5.007< 5.1.2.0.5.007< 5.1.2.0.5.007CVSS 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
- Local
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:H/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 the Dell EMC Unity product typeAccess Unisphere or the system CLI and determine if the system is Unity, Unity XT, or UnityVSA. In the CLI, use 'system show' or check the management interface system information page.Affected if The system is a Dell EMC Unity, Unity XT, or UnityVSA storage appliance
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Determine the Operating Environment versionIn the Unisphere web interface, go to Settings > Support > About, or in the CLI run the 'version' command to retrieve the Operating Environment version number.Affected if The installed version cannot be determined or is not visible in the management interface
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Compare the installed version against the affected rangeCheck if the Operating Environment version is below 5.1.2.0.5.007. Version numbers are typically formatted as major.minor.patch.build (for example, 5.1.1.0.5.003 would be affected).Affected if The installed version is less than 5.1.2.0.5.007 (for example, 5.1.1.x.x or any 5.0.x.x release)
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Verify local administrative access existsConfirm that local user accounts with high or administrative privileges exist on the system. Check this through Unisphere under Access > Users or via the CLI using 'user -list' or similar user management commands.Affected if Local high-privilege user accounts are present on the system
The environment is affected if it is a Dell EMC Unity, Unity XT, or UnityVSA storage system running an Operating Environment version earlier than 5.1.2.0.5.007 and local high-privilege authentication is enabled.
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 · scoped5.1.2.0.5.007
Upgrade Dell EMC Unity, UnityVSA, or Unity XT to version 5.1.2.0.5.007 or later to remediate this vulnerability.
5.1.2.0.5.007
- Identify the current version of Dell EMC Unity, UnityVSA, or Unity XT installed
- Plan and schedule a maintenance window for the upgrade
- Back up all critical data and configurations according to Dell best practices
- Download the update package for version 5.1.2.0.5.007 from Dell's support website
- Follow Dell's official upgrade documentation to upgrade the Unity system to version 5.1.2.0.5.007 or later
- After upgrade, verify the system is running the patched version and confirm normal operation
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-43589 — 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-2021-43589 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
- No spam, self-promotion, credentials, or personal data