---
id: CVE-2026-67271
title: >-
  Dell PowerStore SDNAS, contains an Out-of-bounds Write vulnerability in
  SMB/CIFS
summary: >-
  Dell PowerStore SDNAS, contains an Out-of-bounds Write vulnerability in
  SMB/CIFS. An unauthenticated attacker with remote access could potentially
  exploit this vulnerability, leading to denial of service and remote execution.
  This is a C…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
published: '2026-08-18'
updated: '2026-08-31'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67271'
references:
  - url: >-
      https://www.dell.com/support/kbdoc/en-us/000497829/dsa-2026-330-dell-powerstore-t-security-update-for-multiple-vulnerabilities
    label: security_alert@emc.com
tags:
  - nvd
epss: 0.00462
epssPercentile: 0.39286
ingestedAt: '2026-08-31T08:05:08.440Z'
---

## Overview

Dell PowerStore SDNAS, contains an Out-of-bounds Write vulnerability in SMB/CIFS. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to denial of service and remote execution. This is a Critical vulnerability as a remote user could send a specially crafted SMB packet and cause a crash, that is persistent in case automatic restarts are enabled. Additionally, a more sophisticated attacker could use the same vulnerability for remote code execution.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.