CVE-2023-38147 is a heap-based buffer overflow vulnerability classified under CWE-122, affecting the Miracast Wireless Display component in Microsoft Windows 10 Version 1809 (build 10.0.17763.0). Miracast is a wireless display standard allowing devices to project their screens to compatible receivers over Wi-Fi. This vulnerability arises when the Miracast service improperly handles specially crafted network packets, leading to a heap overflow condition. An attacker within network range can send malicious Miracast traffic to a vulnerable system, triggering the overflow and enabling remote code execution (RCE) without requiring any authentication or user interaction. The CVSS v3.1 base score is 8.8, indicating high severity, with attack vector classified as adjacent network (AV:A), low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N). The impact metrics reflect high confidentiality, integrity, and availability impacts, meaning an attacker can fully compromise the affected system. While no public exploits have been reported yet, the vulnerability's characteristics make it a significant threat, especially in environments where Miracast is enabled and accessible. The lack of patch links in the provided data suggests organizations must monitor Microsoft advisories closely for updates or mitigations. Given the nature of wireless display protocols, the vulnerability could be exploited in corporate environments, conference rooms, or public spaces where Miracast is active.

For European organizations, this vulnerability poses a critical risk to endpoint security, particularly for those still running Windows 10 Version 1809. Successful exploitation can lead to complete system compromise, allowing attackers to steal sensitive data, disrupt operations, or move laterally within corporate networks. Industries that rely on wireless display technologies for presentations, remote collaboration, or digital signage—such as finance, healthcare, manufacturing, and government—are especially vulnerable. The ability to execute code remotely without authentication or user interaction increases the threat level, as attackers can operate stealthily from adjacent networks or Wi-Fi segments. This could lead to breaches of personal data protected under GDPR, operational downtime, and reputational damage. Additionally, critical infrastructure entities using legacy Windows 10 versions may face increased risk of targeted attacks exploiting this flaw.

1. Immediately verify if any systems are running Windows 10 Version 1809 (build 10.0.17763.0) and prioritize them for remediation. 2. Apply official Microsoft patches or security updates as soon as they become available; monitor Microsoft Security Response Center for announcements. 3. If patches are not yet available, consider disabling Miracast functionality via Group Policy or registry settings to eliminate the attack surface. 4. Restrict wireless network access to trusted devices only and segment networks to limit exposure of vulnerable systems to adjacent networks. 5. Implement network monitoring and intrusion detection systems to identify anomalous Miracast traffic or attempts to exploit the vulnerability. 6. Educate IT staff and users about the risks of connecting to untrusted wireless display devices or networks. 7. Regularly audit and update endpoint security configurations to ensure legacy systems are either upgraded or properly isolated. 8. Consider upgrading affected systems to a supported Windows version with ongoing security updates to reduce future exposure.