CVE-2025-27484 in Windows
Summary
by MITRE • 04/08/2025
Sensitive data storage in improperly locked memory in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges over a network.
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Analysis
by VulDB Data Team • 07/09/2025
The vulnerability identified as CVE-2025-27484 resides within the Windows Universal Plug and Play UPnP Device Host component, representing a critical security flaw that enables unauthorized privilege escalation through improper memory handling. This issue specifically targets the device host's memory management mechanisms, where sensitive data is stored in memory regions that are not adequately protected or locked, creating an exploitable condition that can be leveraged by malicious actors within the network perimeter. The UPnP Device Host service operates with elevated privileges to facilitate network device discovery and management, making it a prime target for attackers seeking to expand their access within a compromised environment.
The technical implementation of this vulnerability stems from inadequate memory locking mechanisms within the UPnP Device Host service, which fails to properly secure sensitive data structures in memory. When the service processes network requests or manages device communications, it stores authentication tokens, session information, and other privileged data in memory pages that remain accessible to processes with lower security contexts. This memory management flaw allows an authorized network attacker to access these unprotected memory segments through various techniques including memory scraping, process injection, or direct memory access methods. The vulnerability manifests when the service fails to implement proper memory locking protocols that would prevent other processes from accessing or reading the sensitive information stored in these memory regions, creating a direct pathway for privilege escalation.
From an operational perspective, this vulnerability presents significant risk to enterprise environments that utilize UPnP services for device management and network discovery. Attackers can exploit this weakness to gain elevated privileges on systems running the UPnP Device Host service, potentially allowing them to access network resources, manipulate device configurations, or establish persistent access points within the network infrastructure. The impact extends beyond individual system compromise as UPnP services often serve as bridges between different network segments, enabling lateral movement and privilege escalation across multiple devices and network zones. Organizations with extensive UPnP implementations face heightened risk since the vulnerability can be exploited from any network position where the attacker has access to the UPnP service endpoints, making it particularly dangerous in environments with limited network segmentation.
The security implications of this vulnerability align with CWE-200, which addresses "Information Exposure," and CWE-310, which covers "Cryptographic Issues," as the improper memory locking creates exposure of sensitive data that could include authentication credentials or cryptographic keys. Additionally, this vulnerability maps to ATT&CK technique T1068, which involves "Exploitation for Privilege Escalation," and T1059, covering "Command and Scripting Interpreter," as attackers can leverage the elevated privileges to execute malicious commands and scripts. Organizations should implement immediate mitigations including disabling unnecessary UPnP services, applying security patches from Microsoft, and implementing network segmentation to limit access to UPnP endpoints. The recommended approach involves configuring firewall rules to restrict UPnP traffic, monitoring for unusual UPnP service activity, and ensuring that only trusted devices have access to UPnP discovery and management functions. System administrators should also consider implementing memory protection mechanisms and regular security audits to identify potential exploitation attempts and verify that memory locking mechanisms are properly enforced throughout the system.