dbcve.org
Clustered Data OntapOperating system · Netapp

CVE-2021-26994

MEDIUM · 6.5 CVSS v3.1 Published 2021-06-04
Fix available
A fix is available. Upgrade to 9.7 or later.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable 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
Clustered Data ONTAP versions prior to 9.7P13 and 9.8P3 are susceptible to a vulnerability which could allow single workloads to cause a Denial of Service (DoS) on a cluster node.

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 confidence

Clustered Data ONTAP versions prior to 9.7P13 and 9.8P3 contain a vulnerability where a single workload can cause Denial of Service on a cluster node, likely due to improper resource handling or isolation allowing a workload to exhaust node resources.

MitigationUpgrade Clustered Data ONTAP to version 9.7P13, 9.8P3, or later to patch the vulnerability.

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
Clustered Data OntapOperating system
Affected:< 9.7= 9.7= 9.8

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
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 Clustered Data ONTAP is installed
    Run 'cluster show' or 'version' in the ONTAP CLI to identify the product name and confirm it is NetApp Clustered Data ONTAP
    Affected if The product is not Clustered Data ONTAP (this CVE only affects that specific product)
  2. Identify the installed ONTAP version
    Run 'version' in the ONTAP CLI to display the current ONTAP version number (for example, 9.7, 9.8, or later)
    Affected if Unable to retrieve version information from the system
  3. Check if version is 9.7.x
    Compare the installed version against the affected range: if it starts with 9.7 (such as 9.7, 9.7P1, 9.7P2, up to 9.7P12), the system is affected
    Affected if The version is 9.7.x and is earlier than 9.7P13
  4. Check if version is 9.8.x
    Compare the installed version against the affected range: if it starts with 9.8 (such as 9.8, 9.8P1, 9.8P2), the system is affected
    Affected if The version is 9.8.x and is earlier than 9.8P3
  5. Check if version is prior to 9.7
    If the installed version is any release prior to 9.7 (such as 9.6, 9.5, 9.4, etc.), it falls within the '< 9.7' affected range
    Affected if The version is any release earlier than 9.7

A system is affected if it runs Clustered Data ONTAP version 9.7.x before P13, 9.8.x before P3, or any version prior to 9.7.

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.

From vendor data
Upgrade available Upgrade to 9.7 or later
Fixed in 9.7
Interim mitigation

Upgrade Clustered Data ONTAP to version 9.7P13, 9.8P3, or later to patch the vulnerability.

Fix this in Clustered Data Ontap Scoped from the published advisory
  • Consultation4.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,480
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,968.

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-2021-26994 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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