---
id: CVE-2025-62455
title: >-
  Improper input validation in Windows Message Queuing allows an authorized
  attacker to elevate privileges locally.
summary: >-
  Improper input validation in Windows Message Queuing allows an authorized
  attacker to elevate privileges locally.
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-20
vendor: microsoft
product: windows_10_1607
affected:
  - windows_10_1607 < 10.0.14393.8688
  - windows_10_1809 < 10.0.17763.8146
  - windows_10_21h2 < 10.0.19044.6691
  - windows_10_22h2 < 10.0.19045.6691
  - windows_server_2008
  - windows_server_2008 = r2
  - windows_server_2012
  - windows_server_2012 = r2
  - windows_server_2016 < 10.0.14393.8688
  - windows_server_2019 < 10.0.17763.8146
patched:
  - windows_10_1607 10.0.14393.8688
  - windows_10_1809 10.0.17763.8146
  - windows_10_21h2 10.0.19044.6691
  - windows_10_22h2 10.0.19045.6691
  - windows_server_2016 10.0.14393.8688
  - windows_server_2019 10.0.17763.8146
published: '2025-12-09'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T23:10:00.463'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-62455'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62455'
    label: secure@microsoft.com
tags:
  - nvd
epss: 0.00473
epssPercentile: 0.38325
ingestedAt: '2026-09-25T23:21:16.903Z'
---

## Overview

Improper input validation in Windows Message Queuing allows an authorized attacker to elevate privileges locally.

## Affected

- `windows_10_1607 < 10.0.14393.8688`
- `windows_10_1809 < 10.0.17763.8146`
- `windows_10_21h2 < 10.0.19044.6691`
- `windows_10_22h2 < 10.0.19045.6691`
- `windows_server_2008`
- `windows_server_2008 = r2`
- `windows_server_2012`
- `windows_server_2012 = r2`
- `windows_server_2016 < 10.0.14393.8688`
- `windows_server_2019 < 10.0.17763.8146`

## Remediation

Upgrade past the affected range:

- `windows_10_1607 10.0.14393.8688`
- `windows_10_1809 10.0.17763.8146`
- `windows_10_21h2 10.0.19044.6691`
- `windows_10_22h2 10.0.19045.6691`
- `windows_server_2016 10.0.14393.8688`
- `windows_server_2019 10.0.17763.8146`