---
id: "CVE-2026-86383"
kind: "vulnerability"
aliases: ["CVE-2026-86383"]
title: "Dell PowerProtect Data Domain: path traversal leaks information to privileged users"
severity: "medium"
cvss: 6.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["appliance", "backup", "data-domain", "dell", "infrastructure", "powerprotect"]
not_affected_if: ["no-data-domain", "other-dd-os-release"]
published_at: "2026-10-28T10:17:09+00:00"
first_seen_at: "2026-10-28T10:32:15+00:00"
updated_at: "2026-10-28T10:34:29+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86383", "first_seen_at": "2026-10-28T10:32:15+00:00"}]
---

# Dell PowerProtect Data Domain: path traversal leaks information to privileged users

Several Dell PowerProtect Data Domain releases contain a path traversal flaw that lets a file path escape its intended directory. A high-privileged remote attacker could use it to read information they should not see.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed DD OS release on the appliance and compare it against the affected ranges: 7.7.1.0 through 8.8, 8.3.1.0 through 8.3.1.40, and 8.6.1.0 through 8.6.1.20.

## Fix

- Move to a DD OS release that Dell lists as fixed; the sources do not name the fixed version, so unknown.

## Timeline

- 2026-10-28T10:32:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-86383

## From the sources

Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.8, 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 Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Information disclosure.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_