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CVE-2026-53483

Dell Data Domain Operating System authentication bypass

9.8 CRITICALEPSS 0.63%
  1. Published7 Jul 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Dell Data Domain Operating System≥ 7.14.0.0 < 8.3.1.40 · ≥ 7.7.1.0 < 7.13.1.80 · ≥ 8.4.0.0 < 8.6.1.20 · ≥ 8.7.0.0 < 8.8.0.0

Remediation

Fixed in
Dell Data Domain Operating System≥ 8.3.1.40

References

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Frequently asked

Is CVE-2026-53483 being actively exploited?

CVE-2026-53483 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.63%.

How severe is CVE-2026-53483?

CVE-2026-53483 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.63% probability of exploitation.

Which products are affected by CVE-2026-53483?

Affected products include Dell Data Domain Operating System.

How do I fix CVE-2026-53483?

Upgrade affected software to a fixed version, for example Dell Data Domain Operating System 8.3.1.40 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-53483 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.