---
id: CVE-2026-32216
title: Windows Redirected Drive Buffering System Denial of Service Vulnerability
summary: >-
  Null pointer dereference in Windows Redirected Drive Buffering allows an
  authorized attacker to deny service locally.
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-476
vendor: Microsoft
product: Windows 11 version 26H1
affected:
  - windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.1836
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-04-15T03:57:53.501482Z'
published: '2026-04-14'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T17:25:25.148Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-32216'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32216'
    label: Windows Redirected Drive Buffering System Denial of Service Vulnerability
tags:
  - cve.org
epss: 0.00399
epssPercentile: 0.31306
ingestedAt: '2026-09-25T18:14:20.443Z'
---

## Overview

Null pointer dereference in Windows Redirected Drive Buffering allows an authorized attacker to deny service locally.

## Affected

- `windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.1836`

## Remediation

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