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Powerprotect Dp Series ApplianceApplication · Dell

CVE-2026-26354

CRITICAL · 9.8 CVSS v3.1 Published 2026-04-22
Fix available
A fix is available. Upgrade to 2.7.9 / 7.13.1.60 or later.
See remediation →
100/100
Remediation priority · Urgent
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 Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.6, LTS2025 release version 8.3.1.0 through 8.3.1.10, LTS2024 release versions 7.13.1.0 through 7.13.1.60, contain a stack-based Buffer Overflow vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to arbitrary command execution.

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 a stack-based buffer overflow vulnerability in Feature Release versions 7.7.1.0 through 8.6, LTS2025 release versions 8.3.1.0 through 8.3.1.10, and LTS2024 release versions 7.13.1.0 through 7.13.1.60. An unauthenticated attacker with network access can exploit this buffer overflow to achieve arbitrary command execution on the affected appliance.

MitigationApply vendor-supplied patches for the specific DD OS version (upgrade to 8.7 or later for Feature Release, 8.3.1.11 or later for LTS2025, 7.13.1.61 or later for LTS2024). Implement network segmentation and restrict external access to the Data Domain management interfaces until patching can be completed.

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
Powerprotect Dp Series ApplianceApplication
Affected:< 2.7.9
Data Domain Operating SystemOperating system
Affected:>= 7.7.1.0, < 7.13.1.60>= 7.14.0.0, < 8.3.1.20>= 8.4.0.0, < 8.6.1.10

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
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. Identify the DD OS version
    Access the Data Domain management console or use the CLI command `system show version` to retrieve the installed DD OS version number.
    Affected if The installed version falls within 7.7.1.0 through 7.13.1.59, OR 7.14.0.0 through 8.3.1.19, OR 8.4.0.0 through 8.6.0.x (any build before 8.6.1.10). Compare your version against these ranges to confirm if it is affected.
  2. Confirm the PowerProtect DP Appliance firmware version
    If using a PowerProtect DP Series Appliance, check the appliance firmware version through the management interface or `fwver` command.
    Affected if The firmware version is below 2.7.9.
  3. Verify network accessibility of management interfaces
    Review the network configuration to determine if Data Domain management interfaces (HTTPS, SSH, or other management ports) are exposed to untrusted or external networks.
    Affected if The management interface is reachable from untrusted networks or the internet without proper network segmentation or access controls.
  4. Check for direct external exposure
    Scan or review firewall rules to confirm whether ports used for Data Domain management (typically 22, 443, or vendor-specified ports) are open to the public internet or non-segmented network zones.
    Affected if Management ports are open to the internet or untrusted external networks, enabling an unauthenticated attacker to reach the vulnerable service.

The environment is affected if the DD OS version is 7.7.1.0 to 7.13.1.59, 7.14.0.0 to 8.3.1.19, or 8.4.0.0 to 8.6.0.x (or the DP Appliance firmware is below 2.7.9), AND the management interface is network-accessible to unauthenticated attackers.

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 2.7.9 / 7.13.1.60 / 8.3.1.20 or later
Fixed in 2.7.97.13.1.608.3.1.20
Interim mitigation

Apply vendor-supplied patches for the specific DD OS version (upgrade to 8.7 or later for Feature Release, 8.3.1.11 or later for LTS2025, 7.13.1.61 or later for LTS2024). Implement network segmentation and restrict external access to the Data Domain management interfaces until patching can be completed.

Recommended fix High confidence

PowerProtect DP: 2.7.9+ | DD OS: 7.13.1.60+ (7.7.1-7.13 branch), 8.3.1.20+ (7.14-8.3 branch), 8.6.1.10+ (8.4-8.6 branch)

  1. 1. Identify the currently installed PowerProtect DP Appliance or Data Domain Operating System version using the system CLI or management interface.
  2. 2. For PowerProtect DP Series Appliance: If version is below 2.7.9, plan upgrade to version 2.7.9 or later.
  3. 3. For Data Domain OS on 7.7.1.0 through 7.13.x branch: Upgrade to version 7.13.1.60 or later.
  4. 4. For Data Domain OS on 7.14.0.0 through 8.3.x branch: Upgrade to version 8.3.1.20 or later.
  5. 5. For Data Domain OS on 8.4.0.0 through 8.6.x branch: Upgrade to version 8.6.1.10 or later.
  6. 6. Verify the upgrade was successful by confirming the new version meets the fixed release criteria.
  7. 7. Test that critical Data Domain operations (backup, replication, deduplication) function normally post-upgrade.
Caveat Review Dell upgrade documentation for prerequisite checks, downtime windows, and ensure compatibility with connected backup/management systems before upgrading.

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

Fix this in Powerprotect Dp Series Appliance 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-2026-26354 in production — separate from our analysis above.

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What this is

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