---
id: "CVE-2026-90731"
kind: "vulnerability"
aliases: ["CVE-2026-90731"]
title: "Dell PowerProtect Data Domain: stack overflow lets privileged remote user crash service"
severity: "medium"
cvss: 4.9
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["backup-appliance", "data-domain", "dell", "infrastructure", "powerprotect"]
not_affected_if: ["no-remote-admin-access", "versions-outside-listed-ranges"]
published_at: "2026-10-27T12:17:08+00:00"
first_seen_at: "2026-10-27T12:31:38+00:00"
updated_at: "2026-10-27T12:32:17+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90731", "first_seen_at": "2026-10-27T12:31:38+00:00"}]
---

# Dell PowerProtect Data Domain: stack overflow lets privileged remote user crash service

Several Dell PowerProtect Data Domain release lines contain a stack-based buffer overflow. A highly privileged attacker with remote access can trigger it to cause a denial of service.

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

## How to check

- Check the installed Data Domain OS version against the affected ranges in the Dell advisory (Feature Release 7.7.1.0 through 8.7, 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)
- Confirm which admin accounts can reach the management interface remotely

## Fix

- Move Data Domain OS to a fixed release listed in the Dell advisory for your release line (fixed versions unknown from these sources)
- Restrict management interface access to trusted admin networks until patched

## Timeline

- 2026-10-27T12:31:38+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-90731

## From the sources

Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.7, 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 a Stack-based Buffer Overflow vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Denial of service.

---

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