---
id: CVE-2026-61925
title: >-
  Incorrect authorization in Windows Installer allows an authorized attacker to
  elevate privileges locally.
summary: >-
  Incorrect authorization in Windows Installer 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-863
published: '2026-08-11'
updated: '2026-08-16'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-61925'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61925'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00381
epssPercentile: 0.31982
ingestedAt: '2026-08-16T19:41:34.646Z'
vendor: Microsoft
product: Windows 10 Version 1607
affected:
  - windows_10_version_1607 >= 10.0.14393.0 < 10.0.14393.9418
  - windows_10_version_1809 >= 10.0.17763.0 < 10.0.17763.9121
  - windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7663
  - windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19045.7663
  - windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7517
  - windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7517
  - windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.9168
  - windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.9168
  - windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2704
  - windows_server_2012 >= 6.2.9200.0 < 6.2.9200.26280
  - windows_server_2012_server_core_installation >= 6.2.9200.0 < 6.2.9200.26280
  - windows_server_2012_r2 >= 6.3.9600.0 < 6.3.9600.23338
  - >-
    windows_server_2012_r2_server_core_installation >= 6.3.9600.0 <
    6.3.9600.23338
  - windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9418
  - >-
    windows_server_2016_server_core_installation >= 10.0.14393.0 <
    10.0.14393.9418
  - windows_server_2019 >= 10.0.17763.0 < 10.0.17763.9121
  - >-
    windows_server_2019_server_core_installation >= 10.0.17763.0 <
    10.0.17763.9121
  - windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5499
  - windows_server_2025 >= 10.0.26100.0 < 10.0.26100.33296
  - >-
    windows_server_2025_server_core_installation >= 10.0.26100.0 <
    10.0.26100.33296
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-08-12T03:59:24.567334Z'
---

## Overview

Incorrect authorization in Windows Installer allows an authorized attacker to elevate privileges locally.

## Remediation

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