# CVE-2026-86390: Dell PowerProtect Data Domain missing authorization

Source: https://junglewise.ai/threats/cve-2026-86390-dell-powerprotect-data-domain-feature-release-versions-7-7-1-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-28. Updated: 2026-10-28  
License: CC BY 4.0 with a link back

CVE-2026-86390 · Severity: medium · CVSS 6.5 · Published 2026-10-28

Dell PowerProtect Data Domain is a backup and data protection system used by enterprises to store and recover critical business data. A missing authorization vulnerability in versions 7.7 through 8.8 allows a low-privileged remote attacker to access functionality they should not have access to, potentially exposing or modifying protected data without proper authorization.

Technologies: [Dell PowerProtect Data Domain](https://junglewise.ai/threats/technologies/powerprotect-data-domain). Vendors: [Dell](https://junglewise.ai/threats/vendors/dell).

## Quick answers

**Is CVE-2026-86390 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-86390 being exploited in the wild.

**How severe is CVE-2026-86390?** Medium severity, with a CVSS score of 6.5, published 28 October 2026.

**Which products and versions are affected?** 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; LTS2026 8.6.1.0 through 8.6.1.20.

**Is there a fix for CVE-2026-86390?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-86390 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-86390?** Check whether you run Dell PowerProtect Data Domain at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a missing authorization flaw in Dell PowerProtect Data Domain that allows a low-privileged attacker with remote network access to bypass authorization checks. An attacker can exploit this to gain unauthorized access to sensitive functions or data. The advisory indicates the issue affects multiple release versions and can be remediated through patching.

## Affected products

- 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; LTS2026 8.6.1.0 through 8.6.1.20

## Timeline

- 2026-10-28: disclosed

## References

- [https://www.dell.com/support/kbdoc/en-us/000515178/dsa-2026-416-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilities](https://www.dell.com/support/kbdoc/en-us/000515178/dsa-2026-416-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilities)

## Related threats

- [Dell PowerProtect Data Domain stack buffer overflow](https://junglewise.ai/threats/cve-2026-86378-dell-powerprotect-data-domain-feature-release-versions-7-7-1-0)
- [Dell PowerProtect Data Domain out-of-bounds write](https://junglewise.ai/threats/cve-2026-86377-dell-powerprotect-data-domain-feature-release-versions-7-7-1-0)
- [Dell PowerProtect Data Domain OS command injection](https://junglewise.ai/threats/cve-2026-110541-dell-powerprotect-data-domain-feature-release-versions-7-7-1-0)
- [Dell PowerProtect Data Domain stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-103780-dell-powerprotect-data-domain-feature-release-versions-7-7-1-0)
- [Dell PowerProtect Data Domain improper authentication](https://junglewise.ai/threats/cve-2026-103779-dell-powerprotect-data-domain-feature-release-versions-7-7-1-0)