CVE-2025-54102 is a use-after-free vulnerability classified under CWE-416, found in the Windows Connected Devices Platform Service on Microsoft Windows 10 Version 1607 (build 10.0.14393.0). Use-after-free vulnerabilities occur when a program continues to use a pointer after the memory it points to has been freed, leading to undefined behavior such as memory corruption or arbitrary code execution. In this case, an authorized local attacker can exploit this flaw to elevate privileges on the affected system. 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 base score is 7.8, indicating high severity, with impacts rated high on confidentiality, integrity, and availability. The attack vector is local (AV:L), attack complexity is low (AC:L), privileges required are low (PR:L), and no user interaction is needed (UI:N). The vulnerability scope is unchanged (S:U), meaning the exploit affects resources managed by the same security authority. Although no public exploits are known at this time, the vulnerability could allow attackers to execute arbitrary code with elevated privileges, potentially leading to full system compromise. The lack of available patches at publication suggests organizations must monitor for updates and consider interim mitigations. The vulnerability affects legacy Windows 10 Version 1607 systems, which are less common but still present in some enterprise environments.

The primary impact of CVE-2025-54102 is local privilege escalation, which can allow attackers with limited access to gain SYSTEM-level privileges. This elevation can lead to complete system compromise, enabling attackers to install persistent malware, access sensitive data, disable security controls, or move laterally within a network. Confidentiality is at high risk as attackers can access protected information. Integrity is compromised since attackers can modify system files or configurations. Availability is also threatened because attackers could disrupt or disable critical services. Organizations running legacy Windows 10 Version 1607 systems, especially in environments where local access controls are weak, face significant risk. The vulnerability could be leveraged in targeted attacks or combined with other exploits to escalate privileges after initial access. Although exploitation requires local access, insider threats or malware with limited privileges could exploit this flaw to gain full control. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as attackers often develop exploits after vulnerability disclosure.

1. Apply official security patches from Microsoft as soon as they become available for Windows 10 Version 1607. 2. If patches are not yet available, restrict local access to affected systems by enforcing strict user account controls and limiting administrative privileges. 3. Disable or restrict the Windows Connected Devices Platform Service where feasible, especially on systems that do not require its functionality. 4. Employ application whitelisting and endpoint detection and response (EDR) solutions to detect anomalous behavior indicative of exploitation attempts. 5. Monitor system logs and audit events for unusual privilege escalation activities. 6. Consider upgrading affected systems to a supported and updated Windows version to reduce exposure to legacy vulnerabilities. 7. Implement network segmentation to limit lateral movement opportunities if a system is compromised. 8. Educate users and administrators about the risks of local privilege escalation vulnerabilities and the importance of applying updates promptly.