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CriticalVulnerabilityCVE-2026-86384updated 28 Oct 2026, 13:40 UTC

Dell PowerProtect Data Domain can leak login credentials to remote attackers

Dell's backup storage appliances contain a built-in secret key that is the same on every copy. An attacker on the network can use it to reveal stored login details and then sign in as a legitimate user.

Official, 2 sources
SeverityCriticalCVSS 9.8 of 10
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official, 2 sourcesBacked by an official source

How the attack works simplified

  1. 1Remote attackerNo login needed to start
  2. 2Reaches applianceConnects over the network
  3. 3Uses hard-coded keySame key exists in every copy
  4. 4Credentials exposedStored login details revealed
  5. ResultAttacker logs in as the compromised user

What happened

Dell PowerProtect Data Domain systems use a hard-coded cryptographic key, allowing unauthenticated remote attackers to expose credentials.

Why it is dangerous: Stolen credentials let an attacker act with the privileges of the compromised user, potentially reaching and tampering with backup data. Any organization running an affected Data Domain system that is reachable over the network is at risk.

Are you affected?

You are affected if you run Dell PowerProtect Data Domain Feature Release 7.7.1.0 through 8.8, LTS2024 7.13.1.0 through 7.13.1.80, LTS2025 8.3.1.0 through 8.3.1.40, or LTS2026 8.6.1.0 through 8.6.1.20.

PowerProtect Data Domain: Feature Release 7.7.1.0 through 8.8; LTS2024 7.13.1.0 through 7.13.1.80; LTS2025 8.3.1.0 through 8.3.1.40; LTS2026 8.6.1.0 through 8.6.1.20

What to do

  1. Check your Data Domain OS version against the affected ranges above
  2. Apply the fixed release from Dell's security advisory for your version line as soon as it is available
  3. Restrict remote management access to the system to trusted networks only
  4. Review account activity and rotate credentials on affected systems

Timeline

  1. 28 Oct 2026, 10:17 UTC
    Publicly disclosed
  2. 28 Oct 2026, 10:17 UTC
    Reported by NVD · NVD
  3. 28 Oct 2026, 10:18 UTC
    Picked up by Zero Radar
  4. 28 Oct 2026, 13:40 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-86384 · GHSA-wx5f-jc55-rgj8
CVSS
9.8 / 10
EPSS
0.5% chance of exploitation within 30 days
Disclosed
28 Oct 2026, 10:17 UTC
On Zero Radar
28 Oct 2026, 10:18 UTC (2 min after disclosure)
Last change
28 Oct 2026, 13:40 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

Dell PowerProtect Data Domain can leak login credentials to remote attackers · Zero Radar