CVE-2026-53481: Dell Data Domain Operating System path traversal (CVSS 9.8)

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 contain an improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access to the system. 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

Patch & vendor advisories

https://www.dell.com/support/kbdoc/en-us/000481268/dsa-2026-278-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilities

References

https://www.dell.com/support/kbdoc/en-us/000481268/dsa-2026-278-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilitiesVendor Advisory

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2026-53481 being actively exploited?

CVE-2026-53481 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.63%.

How severe is CVE-2026-53481?

CVE-2026-53481 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-2026-53481?

Affected products include Dell Data Domain Operating System.

How do I fix CVE-2026-53481?

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-2026-53481 against the real software inventory on every managed device, every day. 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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