CVE-2025-59192 is a buffer over-read vulnerability classified under CWE-126 found in the Storport.sys driver component of Microsoft Windows 10 Version 1809 (build 17763.0). Storport.sys is a kernel-mode driver responsible for storage port operations, and improper bounds checking in its code allows an authorized local attacker to read beyond allocated memory buffers. This can lead to privilege escalation by corrupting kernel memory or leaking sensitive information, enabling the attacker to gain SYSTEM-level privileges from a lower-privileged context. The vulnerability requires local access and privileges but does not require user interaction, making it a direct local privilege escalation vector. The CVSS 3.1 score of 7.8 reflects high severity due to the high impact on confidentiality, integrity, and availability, combined with low attack complexity and limited privileges required. Although no exploits have been observed in the wild yet, the vulnerability poses a significant risk to environments still running Windows 10 1809, which is an older but still in-use version in some enterprises. The lack of available patches at the time of publication necessitates immediate attention to mitigate risk through access controls and monitoring until official updates are released.

For European organizations, this vulnerability presents a critical risk especially in sectors relying on legacy Windows 10 1809 systems, such as manufacturing, healthcare, and government agencies. Successful exploitation could allow attackers to escalate privileges locally, potentially leading to full system compromise, unauthorized access to sensitive data, and disruption of critical services. The impact on confidentiality, integrity, and availability is high, which could result in data breaches, operational downtime, and regulatory non-compliance under GDPR. Organizations with remote or shared workstation environments are particularly vulnerable if local user accounts are not tightly controlled. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, as attackers may develop exploits rapidly once details are public. European entities with legacy infrastructure should consider this vulnerability a priority for risk management and incident response planning.

1. Apply official Microsoft security patches immediately once they become available for Windows 10 Version 1809. 2. Restrict local user privileges to the minimum necessary, especially on systems running this OS version, to reduce the attack surface. 3. Implement strict access controls and monitoring on endpoints to detect anomalous behavior related to Storport.sys or privilege escalation attempts. 4. Consider upgrading affected systems to a supported, more recent Windows version to eliminate exposure to this and other legacy vulnerabilities. 5. Use endpoint detection and response (EDR) tools to monitor kernel-level activities and alert on suspicious memory access patterns. 6. Conduct regular security audits and vulnerability scans focusing on legacy systems to identify and remediate similar risks. 7. Educate IT staff and users about the risks of local privilege escalation and enforce policies to prevent unauthorized software installations or execution.