CVE-2025-54092 is a vulnerability classified under CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization), commonly known as a race condition, found in Microsoft Windows 10 Version 1809, specifically within the Hyper-V virtualization platform. The flaw occurs when multiple threads or processes access shared resources without proper synchronization, leading to inconsistent or unexpected behavior. In this case, an authorized local attacker with limited privileges can exploit the race condition to elevate their privileges on the host system. The vulnerability does not require user interaction but does require local access with some privileges (PR:L). The CVSS v3.1 score of 7.8 reflects high severity, with impacts rated high on confidentiality, integrity, and availability. The attack vector is local, and the attack complexity is low, meaning an attacker with local access can reliably exploit the flaw. No known exploits have been observed in the wild, and no patches have been published at the time of analysis. The vulnerability poses a significant risk to environments using Windows 10 Version 1809 with Hyper-V enabled, as it could allow attackers to bypass security boundaries and gain elevated privileges, potentially compromising the entire system and any virtual machines hosted on it.

The primary impact of CVE-2025-54092 is local privilege escalation, which can lead to full system compromise. An attacker exploiting this vulnerability can gain elevated privileges, allowing them to execute arbitrary code with higher permissions, access sensitive data, modify system configurations, or disrupt system availability. This undermines the confidentiality, integrity, and availability of affected systems. Organizations relying on Windows 10 Version 1809 with Hyper-V for virtualization workloads, development, or testing environments are particularly at risk. The vulnerability could be leveraged as a stepping stone for lateral movement within networks, especially in enterprise environments where Hyper-V is widely used. Although no exploits are currently known in the wild, the ease of exploitation and high impact make it a critical concern for organizations with local user access, such as enterprises with many employees or contractors having physical or remote desktop access. Failure to address this vulnerability could result in data breaches, service disruptions, and loss of trust.

1. Restrict local access: Limit the number of users with local access to systems running Windows 10 Version 1809 with Hyper-V enabled. Use the principle of least privilege to minimize exposure. 2. Monitor and audit: Implement enhanced monitoring for unusual privilege escalation attempts and anomalous behavior on Hyper-V hosts. 3. Apply patches promptly: Although no patches are currently available, organizations should prioritize deploying official updates from Microsoft as soon as they are released. 4. Use updated OS versions: Consider upgrading to newer, supported Windows versions where this vulnerability is not present or has been addressed. 5. Harden Hyper-V configurations: Disable or restrict unnecessary Hyper-V features and services to reduce the attack surface. 6. Employ endpoint protection: Use advanced endpoint detection and response (EDR) solutions capable of detecting exploitation attempts related to race conditions and privilege escalation. 7. Network segmentation: Isolate Hyper-V hosts from less trusted network segments to limit the impact of a compromised host. 8. Educate users: Train local users on security best practices to reduce the risk of inadvertent exposure or exploitation.