CVE-2025-59192 in Windows
Summary
by MITRE • 10/14/2025
Buffer over-read in Storport.sys Driver allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 10/18/2025
The vulnerability identified as CVE-2025-59192 represents a critical buffer over-read condition within the Storport.sys driver component of Microsoft Windows operating systems. This driver serves as a crucial storage port interface that manages communication between storage devices and the operating system kernel, making it a prime target for privilege escalation attacks. The flaw manifests when the driver processes certain input data structures without proper bounds checking, allowing an attacker to read memory beyond allocated buffer boundaries. This type of vulnerability falls under the Common Weakness Enumeration category CWE-125, which specifically addresses out-of-bounds read conditions that can lead to information disclosure and system compromise. The Storport.sys driver operates at kernel level within the Windows operating system, making any vulnerability within this component particularly dangerous as it can be exploited to gain unauthorized access to sensitive system resources and potentially elevate privileges from standard user to administrator level.
The technical exploitation of this vulnerability requires an attacker to have already established a foothold on the target system with standard user privileges, as the attack vector is local in nature. Once inside the system, the attacker can leverage the buffer over-read condition by crafting malicious input that triggers the vulnerable code path within the Storport.sys driver. The over-read behavior allows the attacker to access memory locations that should normally be protected, potentially revealing kernel memory contents including sensitive data, cryptographic keys, or other critical system information. This memory access pattern aligns with ATT&CK technique T1068 which describes the use of local privilege escalation techniques to gain higher system privileges. The vulnerability's exploitation typically involves manipulating storage-related operations that flow through the Storport driver, such as disk I/O operations or storage device enumeration processes, where the driver fails to validate input parameters properly before processing them.
The operational impact of CVE-2025-59192 extends beyond simple privilege escalation to potentially enable full system compromise and persistent access. When successfully exploited, the vulnerability can allow attackers to bypass standard Windows security mechanisms including User Account Control, access protected registry keys, and modify critical system files. The attack surface is particularly concerning given that Storport.sys is loaded by default on virtually all Windows installations, making this vulnerability potentially exploitable across a broad range of systems. The memory read behavior could expose sensitive information such as kernel memory addresses, which could be used for more sophisticated attacks including return-oriented programming or other advanced exploitation techniques. Additionally, the vulnerability may enable attackers to access memory regions containing credentials, encryption keys, or other sensitive data that could be used for lateral movement or data exfiltration within the compromised network. Organizations running affected Windows versions face significant risk of unauthorized system access and potential data breaches.
Mitigation strategies for CVE-2025-59192 should focus on immediate patch deployment and system hardening measures. Microsoft has released security updates addressing this vulnerability, and organizations must prioritize applying these patches across all affected systems. In environments where immediate patching is not feasible, administrators should implement additional security controls including disabling unnecessary storage drivers, restricting user privileges, and monitoring for suspicious storage-related activities. The vulnerability's nature suggests that traditional antivirus solutions may not detect exploitation attempts, making behavioral monitoring and anomaly detection particularly important. Security teams should also consider implementing runtime protection mechanisms that can detect and prevent malicious buffer over-read patterns, as well as maintaining comprehensive system monitoring to identify potential exploitation attempts. Network segmentation and principle of least privilege should be enforced to limit the potential impact of successful exploitation, while regular security assessments should be conducted to identify and remediate similar vulnerabilities in other system components. The vulnerability underscores the importance of maintaining up-to-date security patches and conducting regular vulnerability assessments to protect against emerging threats in the Windows operating system environment.