Cloud Vulnerability DB
An open project to list all known cloud vulnerabilities and Cloud Service Provider security issues
Vulnerability DatabaseCVE-2025-21300
CVE-2025-21300:
vulnerability analysis and mitigation
Overview
Windows upnphost.dll Denial of Service Vulnerability (CVE-2025-21300) was disclosed on January 14, 2025. This vulnerability affects multiple versions of Microsoft Windows operating systems, including Windows 10, Windows 11, and various Windows Server editions (NVD).
Technical details
The vulnerability has been assigned a CVSS v3.1 Base Score of 7.5 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. The weakness has been classified under CWE-400 (Uncontrolled Resource Consumption) by Microsoft Corporation (NVD).
Impact
This vulnerability specifically affects the availability of the system through the upnphost.dll component, potentially leading to denial of service conditions. The CVSS scoring indicates high impact on availability with no impact on confidentiality or integrity (NVD).
Mitigation and workarounds
Microsoft has released security updates to address this vulnerability across multiple Windows versions. Updates are available through various KB articles including KB5050013 for Windows 10 1507, KB5049993 for Windows 10 1607, and KB5050021 for Windows 11 22H2 and 23H2 (Rapid7).
Additional resources
Source: This report was generated using AI
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