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7.8
HIGH CVSS 3.1
CVE-2025-50173
Windows Installer Elevation of Privilege Vulnerability
Description

Weak authentication in Windows Installer allows an authorized attacker to elevate privileges locally.

INFO

Published Date :

Aug. 12, 2025, 6:15 p.m.

Last Modified :

Aug. 19, 2025, 2:36 p.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-50173 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft windows_server_2008
2 Microsoft windows_server_2012
3 Microsoft windows_server_2016
4 Microsoft windows_server_2019
5 Microsoft windows_10_1607
6 Microsoft windows_10_1809
7 Microsoft windows_10_21h2
8 Microsoft windows_10_22h2
9 Microsoft windows_server_2022
10 Microsoft windows_11_22h2
11 Microsoft windows_10_1507
12 Microsoft windows_11_23h2
13 Microsoft windows_server_2022_23h2
14 Microsoft windows_server_23h2
15 Microsoft windows_server_2012_r2
16 Microsoft windows_server_2008_r2
17 Microsoft windows_server_2008_sp2
18 Microsoft windows_11_24h2
19 Microsoft windows_server_2025
: Total Affected Vendor : 1 | Products : 19
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH [email protected]
Solution
Address weak authentication by applying vendor security updates and hardening.
  • Apply vendor security updates to Windows Installer.
  • Review and strengthen authentication mechanisms.
  • Implement least privilege principles.
  • Monitor for unauthorized privilege escalation.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-50173.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-50173 Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-50173 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-50173 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-50173 vulnerability anywhere in the article.

  • BleepingComputer
Microsoft fixes app install issues caused by August Windows updates

Microsoft has fixed a known issue caused by the August 2025 security updates, which triggers unexpected User Account Control (UAC) prompts and app installation problems for non-admin users on all Wind ... Read more

Published Date: Sep 10, 2025 (2 days, 9 hours ago)
  • Daily CyberSecurity
Windows Update Is Causing Unexpected UAC Prompts and App Installation Issues

According to a notice published on the Windows Health Dashboard, Microsoft has confirmed that the routine security updates released in August are causing unexpected UAC (User Account Control) prompts ... Read more

Published Date: Sep 05, 2025 (1 week ago)
  • The Register
Windows starts asking for admin rights where it shouldn't after security fix

Microsoft's August 2025 Windows Security Update is causing pain for administrators after a fix for a vulnerability led to some unintended consequences. The fix was related to CVE-2025-50173, which add ... Read more

Published Date: Sep 04, 2025 (1 week, 1 day ago)
  • BleepingComputer
Microsoft says recent Windows updates cause app install issues

Microsoft says the August 2025 security updates are triggering unexpected User Account Control (UAC) prompts and app installation issues for non-admin users across all supported Windows versions. This ... Read more

Published Date: Sep 04, 2025 (1 week, 1 day ago)
  • CybersecurityNews
Microsoft Confirms UAC Bug Breaks App Install On Windows 11 And 10 Versions

Microsoft has officially acknowledged a significant bug in recent Windows security updates that is causing application installation and repair failures across multiple versions of Windows 10, Windows ... Read more

Published Date: Sep 04, 2025 (1 week, 1 day ago)
  • BleepingComputer
Microsoft August 2025 Patch Tuesday fixes one zero-day, 107 flaws

Today is Microsoft's August 2025 Patch Tuesday, which includes security updates for 107 flaws, including one publicly disclosed zero-day vulnerability in Windows Kerberos.This Patch Tuesday also fixes ... Read more

Published Date: Aug 12, 2025 (1 month ago)
  • CybersecurityNews
Microsoft Patch Tuesday August 2025 Released – 107 Vulnerabilities Fixed Including 36 RCE

Microsoft released its August Patch Tuesday security updates, addressing a total of 107 vulnerabilities across its product ecosystem. The update includes fixes for 90 vulnerabilities, classified as fo ... Read more

Published Date: Aug 12, 2025 (1 month ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-50173 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Aug. 19, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.26100.4851 *cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.10240.21100 *cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.10240.21100 *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.14393.8330 *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.14393.8330 *cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.17763.7678 *cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.17763.7678 *cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.19044.6216 *cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.19045.6216 *cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.22621.5768 *cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.22631.5768 *cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.14393.8330 *cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.26100.4851 *cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.17763.7678 *cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.20348.3989 *cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.25398.1791
    Added Reference Type Microsoft Corporation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-50173 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Aug. 12, 2025

    Action Type Old Value New Value
    Added Description Weak authentication in Windows Installer allows an authorized attacker to elevate privileges locally.
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-1390
    Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-50173
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact