CVE-2025-21235: CWE-20: Improper Input Validation in Microsoft Windows 10 Version 21H2
Windows PrintWorkflowUserSvc Elevation of Privilege Vulnerability
AI Analysis
Technical Summary
This vulnerability in Windows 10 Version 21H2 involves improper input validation in the PrintWorkflowUserSvc service, which could allow an attacker with limited privileges to elevate their privileges on the affected system. The CVSS 3.1 vector indicates the attack requires local access with low complexity, no user interaction, and results in high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation could allow a local attacker to gain elevated privileges, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 21H2 (build 10.0.19044.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21235.
CVE-2025-21235: CWE-20: Improper Input Validation in Microsoft Windows 10 Version 21H2
Description
Windows PrintWorkflowUserSvc Elevation of Privilege Vulnerability
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Windows 10 Version 21H2 involves improper input validation in the PrintWorkflowUserSvc service, which could allow an attacker with limited privileges to elevate their privileges on the affected system. The CVSS 3.1 vector indicates the attack requires local access with low complexity, no user interaction, and results in high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation could allow a local attacker to gain elevated privileges, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 21H2 (build 10.0.19044.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21235.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-10T23:54:12.922Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21235","vendor":"Microsoft"}]
Threat ID: 68c0bd4e9ed239a66badeaa8
Added to database: 09/09/2025, 23:50:38 UTC
Last enriched: 06/10/2026, 09:44:40 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 99
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