Dell PowerProtect Data Domain improper authentication

Summaryinfo

A vulnerability was found in Dell PowerProtect Data Domain 7.7.1.0-8.8/7.13.1.0-7.13.1.80/8.3.1.0-8.3.1.40/8.6.1.0-8.6.1.20 and classified as very critical. This impacts an unknown function. The manipulation results in improper authentication. This vulnerability was named CVE-2026-86400. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as very critical has been found in Dell PowerProtect Data Domain 7.7.1.0-8.8/7.13.1.0-7.13.1.80/8.3.1.0-8.3.1.40/8.6.1.0-8.6.1.20. Affected is an unknown code. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.8, LTS2024 release versions 7.13.1.0 through 7.13.1.80, LTS2025 release versions 8.3.1.0 through 8.3.1.40, LTS2026 release versions 8.6.1.0 through 8.6.1.20, contain an Improper Authentication vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to arbitrary command execution with root privileges. This is a critical severity vulnerability as it allows an attacker to take complete control of the system. Dell recommends customers to upgrade at the earliest opportunity.

The advisory is shared for download at dell.com. This vulnerability is traded as CVE-2026-86400 since 09/07/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 10/28/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Dell

Name

• PowerProtect Data Domain

Version

• 7.7.1.0-8.8
• 7.13.1.0-7.13.1.80
• 8.3.1.0-8.3.1.40
• 8.6.1.0-8.6.1.20

License

• commercial

Website

• Vendor: https://www.dell.com/

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Once again VulDB remains the best source for vulnerability data.

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