CVE-2025-59195 is a race condition vulnerability categorized under CWE-362, found in the Microsoft Graphics Component of Windows 11 Version 25H2 (build 10.0.26200.0). The flaw occurs due to improper synchronization when multiple threads or processes concurrently access shared resources within the graphics subsystem. This improper handling can lead to unpredictable behavior, including denial of service (DoS) conditions. An authorized attacker with low privileges on the local machine can exploit this vulnerability to cause system instability or crashes, effectively denying service to legitimate users. The vulnerability affects confidentiality, integrity, and availability because the race condition can corrupt memory or system state, potentially leading to privilege escalation or data corruption, although the primary impact reported is DoS. The CVSS v3.1 score is 7.0, reflecting high severity with attack vector local, attack complexity high, privileges required low, no user interaction, and unchanged scope. No public exploits are known yet, and no patches have been released at the time of reporting. The vulnerability was reserved on 2025-09-10 and published on 2025-10-14. Given the critical role of the graphics component in rendering and system stability, exploitation could disrupt business operations, especially in environments relying heavily on Windows 11 25H2.

For European organizations, this vulnerability poses a significant risk to operational continuity due to potential denial of service on Windows 11 25H2 systems. Organizations with large deployments of Windows 11 desktops and workstations, especially in sectors like finance, healthcare, government, and critical infrastructure, could experience disruptions. The impact extends to confidentiality and integrity as race conditions can lead to memory corruption, which might be leveraged for privilege escalation or data manipulation, although these are not explicitly confirmed. The requirement for local access limits remote exploitation but increases risk from insider threats or compromised endpoints. The high Windows market share in Europe means a broad attack surface, and the lack of patches at present necessitates immediate mitigation efforts. Disruptions in graphics processing could affect user productivity and availability of critical applications, potentially leading to financial losses and reputational damage.

1. Apply official patches from Microsoft immediately once available to address the race condition in the graphics component. 2. Until patches are released, restrict local access to sensitive systems by enforcing strict access controls and limiting administrative privileges. 3. Implement endpoint detection and response (EDR) solutions to monitor for unusual behavior related to graphics subsystem crashes or resource contention. 4. Conduct regular system integrity checks and monitor event logs for signs of instability or crashes linked to graphics processes. 5. Educate users and administrators about the risk of local exploitation and enforce policies to prevent unauthorized local code execution. 6. Consider isolating critical systems or using virtualization/containerization to limit the impact of potential DoS attacks. 7. Maintain up-to-date backups to ensure rapid recovery in case of system crashes or data corruption. 8. Coordinate with IT security teams to prepare incident response plans specific to local privilege abuse and DoS scenarios.