CVE-2025-59220 is a high-severity race condition vulnerability identified in the Windows Bluetooth Service component of Microsoft Windows Server 2022 (build 10.0.20348.0). The flaw arises from improper synchronization when concurrently accessing shared resources, classified under CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization). This race condition allows an authorized local attacker—meaning the attacker must have some level of access to the system—to exploit the timing window to elevate privileges. Specifically, by manipulating the Bluetooth Service's handling of shared resources, the attacker can gain higher privileges than originally granted, potentially achieving SYSTEM-level access. The vulnerability does not require user interaction but does require the attacker to have low-level privileges already (PR:L). The attack complexity is high (AC:H), indicating exploitation demands precise conditions or timing. The CVSS v3.1 base score is 7.0, reflecting high impact on confidentiality, integrity, and availability (all rated high). No known exploits are currently reported in the wild, and no patches have been linked yet, suggesting this is a newly disclosed vulnerability. The race condition could lead to unauthorized access to sensitive system functions or data, potentially allowing attackers to install malware, alter system configurations, or disrupt services on affected Windows Server 2022 systems.

For European organizations, this vulnerability poses a significant risk, especially for enterprises and service providers relying on Windows Server 2022 for critical infrastructure, including domain controllers, file servers, and application servers. Successful exploitation could allow attackers with limited access to escalate privileges and gain full control over servers, leading to data breaches, disruption of business operations, and potential lateral movement within corporate networks. Given the Bluetooth Service is involved, environments using Bluetooth-enabled devices or services integrated with Windows Server 2022 might be particularly exposed. The impact extends to confidentiality (exposure of sensitive data), integrity (unauthorized modification of system or application data), and availability (potential service disruption). The high attack complexity somewhat limits mass exploitation but does not eliminate targeted attacks, especially from skilled adversaries. The absence of known exploits in the wild currently reduces immediate risk but does not preclude future exploitation once proof-of-concept code or weaponized exploits become available.

European organizations should prioritize the following mitigations: 1) Monitor Microsoft security advisories closely for the release of official patches addressing CVE-2025-59220 and apply them promptly upon availability. 2) Restrict local access to Windows Server 2022 systems, limiting user accounts and services that can interact with the Bluetooth Service to reduce the attack surface. 3) Disable the Bluetooth Service on Windows Server 2022 systems where Bluetooth functionality is not required, effectively eliminating the vulnerable component. 4) Employ strict access controls and endpoint security measures to prevent unauthorized local access or privilege escalation attempts. 5) Implement robust logging and monitoring focused on unusual privilege escalation activities or anomalies in Bluetooth Service operations. 6) Conduct internal audits to identify and remediate any unnecessary Bluetooth dependencies on servers. 7) Consider network segmentation to isolate critical servers from less trusted network zones, limiting potential lateral movement if exploitation occurs.