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Data Domain Operating SystemOperating system · Dell

CVE-2025-43727

HIGH · 7.5 CVSS v3.1 Published 2025-10-07
Fix available
A fix is available. Upgrade to 7.10.1.60 / 7.13.1.30 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges 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 PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.1.0.10, LTS2024 release Versions 7.13.1.0 through 7.13.1.25, LTS 2023 release versions 7.10.1.0 through 7.10.1.50, contain an incorrect Implementation of Authentication Algorithm vulnerability in the RestAPI. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.

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

Dell PowerProtect Data Domain systems running DD OS contain an authentication bypass vulnerability in the RestAPI where the authentication algorithm is incorrectly implemented, allowing unauthenticated remote attackers to gain unauthorized system access.

MitigationApply vendor-supplied patches for the affected DD OS Feature Release, LTS2024, or LTS2023 versions, or upgrade to a patched release version.

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, < 7.10.1.60>= 7.13.1.0, < 7.13.1.30>= 8.0.0.0, < 8.3.0.10

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
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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. Check installed DD OS version
    Run the command 'version' or 'show version' on the Data Domain system CLI to display the current DD OS version
    Affected if The displayed version falls within any of these ranges: 7.7.1.0 through 7.10.1.59, 7.13.1.0 through 7.13.1.29, or 8.0.0.0 through 8.3.0.9
  2. Verify RestAPI service status
    Check if the RestAPI service is enabled on the system. This can typically be done via the Data Domain admin console or by running 'system show rest-api' in the CLI if available
    Affected if RestAPI is enabled and the version falls within the affected ranges listed above
  3. Check RestAPI access configuration
    Review the RestAPI access settings to determine if it is exposed to network interfaces or if authentication is properly enforced. Look for any misconfigured authentication settings in the RestAPI configuration
    Affected if RestAPI is exposed to network access without proper authentication enforcement and the version is affected
  4. Identify network exposure of management interface
    Determine if the Data Domain management interface with RestAPI is accessible from untrusted networks. Check network ACLs, firewall rules, or interface bindings for the management ports
    Affected if The RestAPI management interface is accessible from outside the trusted network and the installed version is vulnerable

The system is affected if it is running any DD OS version within 7.7.1.0-7.10.1.59, 7.13.1.0-7.13.1.29, or 8.0.0.0-8.3.0.9 and has the RestAPI service enabled and accessible.

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 7.10.1.60 / 7.13.1.30 / 8.3.0.10 or later
Fixed in 7.10.1.607.13.1.308.3.0.10
Interim mitigation

Apply vendor-supplied patches for the affected DD OS Feature Release, LTS2024, or LTS2023 versions, or upgrade to a patched release version.

Recommended fix Moderate confidence

DD OS 7.10.1.60 (or later 7.10.x LTS2023), DD OS 7.13.1.30 (or later 7.13.x LTS2024), or DD OS 8.3.0.10 (or later 8.x Feature Release)

  1. 1. Identify the current Data Domain Operating System (DD OS) version by running 'ddos -v' or checking the system management interface
  2. 2. Determine which version branch your current installation falls into (LTS2023: 7.10.x, LTS2024: 7.13.x, or Feature Release: 7.7.x-8.1.x/8.2.x)
  3. 3. For Feature Release branch (7.7.1.0-7.10.1.59): Upgrade to version 7.10.1.60 or later
  4. 4. For LTS2024 branch (7.13.1.0-7.13.1.29): Upgrade to version 7.13.1.30 or later
  5. 5. For Feature Release branch (8.0.0.0-8.3.0.9): Upgrade to version 8.3.0.10 or later
  6. 6. Download the appropriate DD OS upgrade package from Dell Support (support.dell.com)
  7. 7. Review Dell Data Domain upgrade documentation and run pre-upgrade checks
  8. 8. Apply the upgrade following standard DD OS upgrade procedures
Caveat Review Dell upgrade documentation for any configuration or compatibility changes between your current and target version; some upgrades may require sequential version stepping

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

Fix this in Data Domain Operating System Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA2.0 h
20.0 hours of engineering $3,500
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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-2025-43727 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