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Powerscale OnefsOperating system · Dell

CVE-2026-21424

MEDIUM · 6.7 CVSS v3.1 Published 2026-03-04
Fix available
A fix is available. Upgrade to 9.10.1.6 / 9.13.0.0 or later.
See remediation →
69/100
Remediation priority · Elevated
Zero-click

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 · unedited
Dell PowerScale OneFS, versions prior to 9.10.1.6 and versions 9.11.0.0 through 9.12.0.1, contains an execution with unnecessary privileges vulnerability. A high privileged attacker with local access could potentially exploit this vulnerability, leading to Elevation of privileges.

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 confidence

Dell PowerScale OneFS contains an execution with unnecessary privileges vulnerability where the application runs with more privileges than required. A high-privileged attacker with local system access can exploit this to gain elevated privileges beyond their current permissions.

MitigationApply the vendor-supplied patch by upgrading to Dell PowerScale OneFS version 9.10.1.6 or later, or version 9.12.1.0 or later.

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
Powerscale OnefsOperating system
Affected:< 9.10.1.6>= 9.11.0.0, < 9.13.0.0

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
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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm PowerScale OneFS is running
    Identify whether the system is a Dell PowerScale storage array running OneFS. This is typically visible in the system hostname, admin web UI, or system documentation.
    Affected if System is not a Dell PowerScale OneFS array (not applicable)
  2. Determine installed OneFS version
    Run the OneFS CLI command to retrieve the version, such as `isi version` or `isi -v`. Alternatively, access the OneFS web administration interface and navigate to the About or System Information page.
    Affected if Unable to retrieve the OneFS version number
  3. Compare version against affected ranges
    Examine the retrieved version number. Affected versions are: any version below 9.10.1.6, or any version from 9.11.0.0 up to but not including 9.13.0.0. Safe versions are 9.10.1.6 through 9.10.x.x, 9.12.1.0 and later, or 9.13.0.0 and later.
    Affected if Installed version is before 9.10.1.6, or between 9.11.0.0 and 9.12.0.x, or between 9.12.1.0 and 9.12.x.x but before 9.13.0.0

You are affected if your PowerScale OneFS version is earlier than 9.10.1.6, or falls in the 9.11.x or 9.12.x release lines before 9.13.0.0.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 9.10.1.6 / 9.13.0.0 or later
Fixed in 9.10.1.69.13.0.0
Interim mitigation

Apply the vendor-supplied patch by upgrading to Dell PowerScale OneFS version 9.10.1.6 or later, or version 9.12.1.0 or later.

Recommended fix High confidence

OneFS 9.13.0.0 (or 9.10.1.6 for older 9.10.x installations)

  1. 1. Back up all critical data and OneFS configuration using the 'isi backup' command or web UI
  2. 2. Download the OneFS 9.13.0.0 upgrade package from Dell Support website (www.dell.com/support)
  3. 3. Access the OneFS web UI or CLI (via SSH) with administrative credentials
  4. 4. In web UI: Navigate to Cluster Management > Software Update > Upload and install the upgrade package
  5. 5. Alternatively via CLI: Run 'isi upgrade' commands to stage and apply the upgrade
  6. 6. After upgrade completes, verify the version by running 'isi version' or checking the web UI
  7. 7. Confirm the vulnerability is resolved by verifying the OneFS version shows 9.13.0.0 or 9.10.1.6
Caveat Review Dell PowerScale OneFS 9.13.0.0 release notes for any configuration or compatibility changes before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Powerscale Onefs Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-21424 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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