CVE-2024-35250 is a vulnerability in Microsoft Windows 10 Version 1809, specifically in the kernel-mode driver, caused by an untrusted pointer dereference (CWE-822). This flaw allows an attacker with low privileges on a local system to dereference pointers that have not been properly validated, leading to arbitrary code execution in kernel mode. Kernel mode execution grants the attacker the highest level of privilege, enabling them to bypass security controls, install persistent malware, or disrupt system operations. The vulnerability does not require user interaction but does require the attacker to have some level of local access (low privileges). The CVSS v3.1 score of 7.8 reflects the high impact on confidentiality, integrity, and availability, combined with relatively low attack complexity and privileges required. No public exploits have been reported yet, but the vulnerability's nature makes it a prime target for attackers seeking privilege escalation on legacy Windows systems. The vulnerability was reserved in May 2024 and published in June 2024, with no patch links currently available, indicating that mitigation may rely on forthcoming updates or workarounds.

For European organizations, this vulnerability poses a significant risk, especially those still operating legacy Windows 10 Version 1809 systems in critical environments such as government agencies, financial institutions, healthcare, and industrial control systems. Successful exploitation could lead to full system compromise, data breaches, disruption of services, and potential lateral movement within networks. The elevation of privilege can undermine endpoint security solutions and facilitate deployment of ransomware or espionage tools. Given the high confidentiality, integrity, and availability impact, organizations could face regulatory penalties under GDPR if personal or sensitive data is compromised. The lack of known exploits currently reduces immediate risk but also means organizations must proactively prepare for potential future attacks. Legacy systems that cannot be upgraded promptly remain vulnerable, increasing the attack surface in European IT environments.

Organizations should prioritize upgrading from Windows 10 Version 1809 to a supported, patched version of Windows as soon as possible. Until patches are available, restrict local access to affected systems by enforcing strict access controls and monitoring for suspicious activity indicative of privilege escalation attempts. Employ application whitelisting and endpoint detection and response (EDR) solutions capable of detecting anomalous kernel-level behavior. Disable or limit unnecessary kernel-mode drivers and services that could be exploited. Regularly audit and harden user privileges to minimize the number of accounts with local access. Network segmentation can limit lateral movement if exploitation occurs. Stay informed through Microsoft security advisories and apply patches immediately upon release. For critical systems that must remain on 1809, consider virtual patching or compensating controls such as enhanced logging and alerting on kernel driver activity.