CVE-2025-62219 is a vulnerability identified in Microsoft Windows 10 Version 1809 (build 10.0.17763.0) affecting the Wireless Provisioning System component. The flaw is a double free condition (CWE-415), where the system attempts to free the same memory twice, leading to undefined behavior such as memory corruption. This vulnerability can be exploited by an authorized local attacker with low privileges to elevate their privileges on the affected system. The attacker does not require user interaction to exploit this issue, but the attack complexity is high, meaning exploitation requires detailed knowledge of the system and conditions. The vulnerability impacts confidentiality, integrity, and availability by potentially allowing an attacker to execute arbitrary code with elevated privileges, modify system settings, or cause system instability. The CVSS v3.1 base score is 7.0, reflecting a high severity level with attack vector local (AV:L), attack complexity high (AC:H), privileges required low (PR:L), no user interaction (UI:N), and impacts on confidentiality, integrity, and availability all high (C:H/I:H/A:H). No public exploits or patches are currently available, but the vulnerability is published and known. The Wireless Provisioning System is a critical component responsible for managing wireless network profiles and connectivity, making this vulnerability particularly sensitive in environments relying on wireless communications.

For European organizations, this vulnerability poses a significant risk especially in sectors relying on Windows 10 Version 1809, including government, finance, healthcare, and critical infrastructure. Successful exploitation could allow attackers to gain elevated privileges locally, bypassing security controls and potentially leading to full system compromise. This could result in unauthorized access to sensitive data, disruption of services, and lateral movement within networks. Given the local attack vector and high complexity, the threat is more relevant to insider threats or attackers with some initial access. However, once exploited, the attacker could disable security mechanisms, install persistent malware, or exfiltrate data. The lack of user interaction requirement increases risk in automated or unattended systems. Organizations with legacy systems or delayed patching practices are particularly vulnerable. The impact on wireless provisioning also raises concerns for environments heavily dependent on wireless connectivity, potentially affecting network availability and security posture.

Organizations should prioritize upgrading or patching affected Windows 10 Version 1809 systems as soon as Microsoft releases a security update addressing CVE-2025-62219. Until patches are available, restrict local access to sensitive systems by enforcing strict access controls and monitoring for unusual privilege escalation attempts. Employ application whitelisting and endpoint detection and response (EDR) solutions to detect anomalous behavior indicative of exploitation attempts. Disable or limit the use of the Wireless Provisioning System where feasible, or apply group policies to restrict its functionality. Conduct regular audits of user privileges to minimize the number of accounts with local access rights. Implement network segmentation to limit the spread of an attacker who gains elevated privileges. Educate IT staff about this vulnerability and ensure incident response plans include scenarios involving local privilege escalation. Finally, maintain up-to-date asset inventories to identify systems running the vulnerable Windows version for targeted remediation.