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Powerscale OnefsOperating system · Dell

CVE-2026-21422

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 9.10.0.0 through 9.13.1.0, contains an external control of system or configuration setting vulnerability. A high privileged attacker with local access could potentially exploit this vulnerability, leading to protection mechanism bypass.

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 versions 9.10.0.0 through 9.13.1.0 contains an external control of system or configuration setting vulnerability. A high-privileged attacker with local access to the system could exploit this to bypass protection mechanisms by manipulating system configuration settings.

MitigationApply the vendor patch when available to upgrade beyond version 9.13.1.0. Until then, limit local administrative access to trusted personnel only and monitor for unauthorized configuration changes.

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:>= 9.10.0.0, < 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. Retrieve the installed PowerScale OneFS version
    Log into the OneFS CLI and run the command: isi version or isi cluster version. The output will display the current OneFS version number.
    Affected if The version displayed matches the pattern 9.10.x.x through 9.10.1.5, or 9.11.x.x through 9.12.x.x
  2. Verify the exact version number against affected ranges
    Compare your installed version number to these ranges: 9.10.0.0 to 9.10.1.5 (first range), and 9.11.0.0 to 9.12.x.x (second range). Versions 9.10.1.6 and later, and 9.13.0.0 and later, are NOT affected.
    Affected if Your version falls within 9.10.0.0-9.10.1.5 OR 9.11.0.0-9.12.x.x (any 9.11 or 9.12 release)
  3. Confirm access to local administrative interface
    Verify whether untrusted or non-administrative users have local console or SSH access to the OneFS cluster nodes.
    Affected if Multiple users have local administrative or root-level access beyond trusted administrators

You are affected if your OneFS version is 9.10.0.0 through 9.10.1.5, or 9.11.0.0 through 9.12.x.x, and untrusted users can obtain local access to the system.

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 patch when available to upgrade beyond version 9.13.1.0. Until then, limit local administrative access to trusted personnel only and monitor for unauthorized configuration changes.

Recommended fix High confidence

Upgrade to 9.10.1.6 (for 9.10.x branch) or 9.13.0.0 or later (for 9.11.x/9.12.x branch)

  1. Identify current PowerScale OneFS version using 'isi version' or through the web UI (Cluster > Overview)
  2. Schedule a maintenance window for the upgrade process
  3. For 9.10.x versions: Upgrade to 9.10.1.6 or later
  4. For 9.11.x and 9.12.x versions: Upgrade to 9.13.0.0 or later
  5. Perform the upgrade via the web UI (Cluster > Updates > Install Update) or CLI using 'isi upgrade' commands
  6. Verify the upgrade was successful and the new version is running
  7. Confirm the vulnerability is remediated
Caveat Review Dell PowerScale OneFS release notes for any configuration or feature changes between your current version and target version 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
  • Implementation6.0 h
  • Testing8.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,800
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,080.

Scan for this in your stack

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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-2026-21422 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