CVE-2025-55325 is a buffer over-read vulnerability classified under CWE-126, found in the Windows Storage Management Provider component of Microsoft Windows 10 Version 1507 (build 10.0.10240.0). This vulnerability allows an authorized local attacker to read beyond the intended buffer boundaries, potentially accessing sensitive information stored in adjacent memory areas. The flaw arises due to improper bounds checking in the handling of storage management data, which can lead to disclosure of information that should otherwise be protected. The attack vector is local, requiring the attacker to have some level of privileges (low privileges) on the affected system, but no user interaction is needed to exploit the vulnerability. The vulnerability does not affect system integrity or availability, focusing solely on confidentiality breaches. The CVSS v3.1 base score is 5.5 (medium severity), reflecting the moderate risk posed by this vulnerability. No known public exploits or patches are currently available, indicating that the vulnerability is newly disclosed and may require immediate attention to prevent future exploitation. The affected product is an early release of Windows 10, which is considered legacy and may still be in use in some environments, especially those with strict legacy application dependencies or limited update policies.

The primary impact of CVE-2025-55325 is unauthorized disclosure of sensitive information due to buffer over-read in the Windows Storage Management Provider. This can lead to leakage of confidential data such as system information, credentials, or other sensitive memory contents accessible to the vulnerable component. While the vulnerability does not allow code execution, privilege escalation, or denial of service, the confidentiality breach can aid attackers in further attacks or reconnaissance. Organizations running Windows 10 Version 1507, particularly in environments where local user accounts are shared or where insider threats exist, face increased risk of data leakage. Legacy systems that are no longer receiving regular security updates are especially vulnerable. The limited attack vector (local access with privileges) reduces the risk of widespread remote exploitation but does not eliminate the threat in environments with multiple users or potential insider attackers.

To mitigate CVE-2025-55325, organizations should prioritize upgrading affected systems from Windows 10 Version 1507 to a supported and fully patched Windows 10 or Windows 11 version, as this legacy version is no longer supported and lacks security updates. If upgrading is not immediately possible, restrict local user privileges to the minimum necessary to limit potential attackers' access. Implement strict access controls and monitoring on systems with multiple users to detect suspicious local activity. Employ application whitelisting and endpoint detection and response (EDR) solutions to identify anomalous behavior related to storage management components. Additionally, isolate legacy systems from sensitive networks and data to reduce the impact of potential information disclosure. Regularly audit and review local user accounts and permissions to minimize the attack surface. Stay alert for official patches or security advisories from Microsoft and apply them promptly once available.