CVE-2025-53725 is a vulnerability classified under CWE-843 (Access of Resource Using Incompatible Type, or type confusion) affecting Microsoft Windows 10 Version 1507 (build 10240.0). The flaw exists within the Windows Push Notifications component, where the system improperly accesses resources using incompatible types. This type confusion can lead to memory corruption, allowing an attacker with authorized local access and limited privileges to escalate their privileges to a higher level, potentially SYSTEM. The vulnerability does not require user interaction but does require the attacker to have some level of local access (PR:L). The CVSS v3.1 base score is 7.8, indicating high severity, with impacts rated high on confidentiality, integrity, and availability. The attack vector is local, and the attack complexity is low, meaning exploitation is feasible once local access is obtained. No known exploits have been reported in the wild yet, and no patches are currently linked, suggesting that mitigation may rely on upgrading or applying future security updates. This vulnerability is particularly relevant for environments still running the original Windows 10 release, which is no longer supported and lacks ongoing security updates. Exploitation could allow attackers to bypass security boundaries, execute arbitrary code with elevated privileges, and compromise system security.

The primary impact of CVE-2025-53725 is local privilege escalation, enabling attackers with limited user rights to gain elevated privileges, potentially SYSTEM-level. This can lead to full system compromise, allowing attackers to install persistent malware, access sensitive data, modify system configurations, and disrupt system availability. The vulnerability affects confidentiality, integrity, and availability of affected systems. In multi-user or shared environments, this flaw could be leveraged by malicious insiders or attackers who have gained limited access to escalate privileges and move laterally. Although the affected Windows 10 version is outdated, legacy systems in critical infrastructure, government, or enterprise environments may still be vulnerable, increasing the risk of targeted attacks. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as exploit code could be developed following public disclosure. Organizations relying on this Windows version face increased risk of compromise if they do not upgrade or apply mitigations.

1. Upgrade affected systems to a supported and fully patched version of Windows 10 or later, as Windows 10 Version 1507 is out of support and unlikely to receive patches. 2. Restrict local user privileges to the minimum necessary to reduce the risk of privilege escalation. 3. Implement application whitelisting and endpoint detection and response (EDR) solutions to detect anomalous behavior related to privilege escalation attempts. 4. Monitor Windows Push Notifications service activity and audit logs for unusual access patterns or errors indicative of exploitation attempts. 5. Employ network segmentation and access controls to limit local access to critical systems, reducing the attack surface. 6. Educate users and administrators about the risks of running unsupported operating system versions and encourage timely updates. 7. Prepare incident response plans to quickly contain and remediate any detected exploitation attempts. 8. If upgrading is not immediately possible, consider disabling or restricting the Windows Push Notifications service where feasible to reduce exposure.