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Data Domain Operating SystemOperating system · Dell

CVE-2026-53483

CRITICAL · 9.8 CVSS v3.1 Published 2026-07-07
Fix available
A fix is available. Upgrade to 7.13.1.80 / 8.3.1.40 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click 7 weeks old

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 PowerProtect Data Domain, versions 7.7.1.0 through 8.7, LTS2026 release version 8.6.1.0 through 8.6.1.10, LTS2025 release version 8.3.1.0 through 8.3.1.30, LTS2024 release versions 7.13.1.0 through 7.13.1.70 an improper authentication vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access. This is a critical severity vulnerability as it allows an attacker to take complete control of system; so Dell recommends customers to upgrade at the earliest opportunity.

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

Improper authentication vulnerability in Dell PowerProtect Data Domain allows unauthenticated remote attackers to gain unauthorized system access. The critical CVSS 9.8 score reflects the vulnerability's potential for complete system compromise due to missing or inadequate authentication checks.

MitigationDell recommends upgrading to the latest version immediately. Organizations should identify their current Data Domain version via the management interface and apply the appropriate security update from Dell's support portal.

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
Data Domain Operating SystemOperating system
Affected:>= 7.7.1.0, < 7.13.1.80>= 7.14.0.0, < 8.3.1.40>= 8.4.0.0, < 8.6.1.20>= 8.7.0.0, < 8.8.0.0

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
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 checks

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

  1. Access Data Domain management interface or CLI
    Log into the Dell Data Domain system via the management console (HTTPS web UI) or connect to the system console/SSH as an administrator
    Affected if System is accessible and is a Dell Data Domain device
  2. Identify the installed Data Domain OS version
    Run the command 'version' or 'system show version' on the CLI, or navigate to the About/System Info page in the web management interface to retrieve the exact OS version number
    Affected if Unable to retrieve version information indicates potential access restrictions, not necessarily unaffected status
  3. Compare version against affected ranges
    Check if the installed version falls within any of these ranges: 7.7.1.0 to 7.13.1.79, 7.14.0.0 to 8.3.1.39, 8.4.0.0 to 8.6.1.19, or 8.7.0.0 to 8.7.x (less than 8.8.0.0)
    Affected if Version number is within any of the four affected ranges indicates the system is vulnerable to unauthenticated access due to the authentication bypass
  4. Confirm the system is exposed to network attack surface
    Verify the Data Domain management interface is reachable from network segments accessible to untrusted users or external networks
    Affected if Management interface is network-accessible from untrusted locations

If the installed Dell Data Domain OS version falls within any of the affected ranges and the management interface is network-accessible, the system is vulnerable to unauthenticated remote attack.

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 7.13.1.80 / 8.3.1.40 / 8.6.1.20 or later
Fixed in 7.13.1.808.3.1.408.6.1.20
Interim mitigation

Dell recommends upgrading to the latest version immediately. Organizations should identify their current Data Domain version via the management interface and apply the appropriate security update from Dell's support portal.

Recommended fix Moderate confidence

7.13.1.80+ / 8.3.1.40+ / 8.6.1.20+ / 8.8.0.0+ (based on version branch)

  1. 1. Identify the current Data Domain Operating System version by running 'system show version' or checking the management console.
  2. 2. Determine which version branch your current installation belongs to (7.7.x, 7.14.x, 8.4.x, or 8.7.x).
  3. 3. For systems on 7.7.1.0 - 7.13.1.70 range: upgrade to version 7.13.1.80 or later.
  4. 4. For systems on 7.14.0.0 - 8.3.1.30 range: upgrade to version 8.3.1.40 or later.
  5. 5. For systems on 8.4.0.0 - 8.6.1.10 range: upgrade to version 8.6.1.20 or later.
  6. 6. For systems on 8.7.0.0 - 8.7.x range: upgrade to version 8.8.0.0 or later.
  7. 7. Download the appropriate upgrade package from Dell Support (www.dell.com/support).
  8. 8. Follow Dell's standard Data Domain upgrade procedure, including pre-upgrade backups and validation.
Caveat Upgrade may require maintenance window; follow Dell upgrade documentation and ensure backup before proceeding

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

Fix this in Data Domain Operating System Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing8.0 h
  • Review / QA4.0 h
30.0 hours of engineering $5,280
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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-2026-53483 in production — separate from our analysis above.

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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