CVE-2025-27484: 
vulnerability analysis and mitigation

A security vulnerability identified as CVE-2025-27484 affects the Windows Universal Plug and Play (UPnP) Device Host component. The vulnerability was disclosed on April 8, 2025, and involves sensitive data storage in improperly locked memory that could allow privilege escalation attacks over a network (NVD).

The vulnerability has been assigned a CVSS v3.1 Base Score of 7.5 (HIGH) with the following vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. The weakness is categorized under CWE-591 (Sensitive Data Storage in Improperly Locked Memory). The vulnerability requires network access and low privileges for exploitation, though it has high complexity requirements (NVD, Rapid7).

If successfully exploited, this vulnerability allows an authorized attacker to elevate privileges over a network, potentially gaining higher levels of access to the affected system. The high CVSS score indicates significant potential impact on confidentiality, integrity, and availability of the affected systems (NVD).

Microsoft has released security updates to address this vulnerability across multiple Windows versions, including Windows 10, Windows 11, and various Windows Server versions. Specific KB updates have been issued: KB5055518 through KB5055581 for different Windows versions and editions (Rapid7).