CVE-2025-47972 is a race condition vulnerability classified under CWE-362, affecting Microsoft Windows 10 Version 1507 (build 10.0.10240.0). The flaw resides in the Input Method Editor (IME) component, which handles keyboard input and language processing. Due to improper synchronization when concurrently accessing shared resources, an authorized attacker with low privileges can exploit this race condition to elevate their privileges remotely over a network. The vulnerability requires user interaction and has a high attack complexity, but once exploited, it can lead to complete compromise of confidentiality, integrity, and availability of the affected system. The CVSS v3.1 base score is 8.0, reflecting the high impact and network attack vector, although the attack complexity is high and privileges required are low. The scope is changed, meaning the vulnerability can affect resources beyond the initially compromised component. No patches or known exploits are currently available, indicating a window of exposure for organizations still running this legacy Windows 10 version. The vulnerability highlights the risks of legacy system usage and the importance of proper synchronization in concurrent programming within critical OS components like IME.

For European organizations, this vulnerability poses a significant risk especially to those still operating legacy Windows 10 Version 1507 systems, which may be present in industrial control systems, government agencies, or enterprises with slow upgrade cycles. Successful exploitation can allow attackers to gain elevated privileges remotely, potentially leading to full system compromise, data breaches, disruption of services, and lateral movement within networks. The confidentiality of sensitive data could be severely impacted, integrity of system processes compromised, and availability of critical services disrupted. Given the network attack vector, this vulnerability could be exploited by remote attackers without physical access, increasing the risk of widespread attacks. The lack of patches and known exploits currently limits immediate exploitation but also means organizations must proactively mitigate risks. The impact is heightened in sectors with high-value targets such as finance, healthcare, and critical infrastructure within Europe.

1. Immediately identify and inventory all systems running Windows 10 Version 1507 (build 10.0.10240.0) within the organization. 2. Prioritize upgrading or migrating these systems to supported, patched Windows versions to eliminate exposure. 3. Implement strict network segmentation and access controls to limit exposure of vulnerable systems to untrusted networks. 4. Monitor network traffic and system logs for unusual IME-related activities or privilege escalation attempts. 5. Employ application whitelisting and endpoint detection and response (EDR) solutions to detect and block suspicious behavior related to IME processes. 6. Restrict user privileges to the minimum necessary to reduce the impact of potential exploitation. 7. Educate users about the risks of interacting with untrusted content or network resources that could trigger the vulnerability. 8. Stay alert for official patches or advisories from Microsoft and apply them promptly once available. 9. Consider deploying virtual patching or compensating controls at network perimeter devices to detect and block exploitation attempts. 10. Conduct penetration testing and vulnerability assessments focusing on legacy Windows systems to identify and remediate other potential weaknesses.