CVE-2024-38057 is an elevation of privilege vulnerability identified in the Kernel Streaming WOW Thunk Service Driver component of Microsoft Windows 10 Version 1809 (build 17763.0). The root cause is an out-of-bounds read condition (CWE-125), where the driver improperly accesses memory outside the intended buffer boundaries. This flaw can be exploited by a local attacker who already has low-level privileges (PR:L) to read memory beyond allocated buffers, potentially leading to corruption or disclosure of sensitive kernel memory. Exploiting this vulnerability allows the attacker to elevate their privileges to SYSTEM level, thereby gaining full control over the affected machine. The attack vector requires local access (AV:L), no user interaction (UI:N), and has low attack complexity (AC:L). The vulnerability affects confidentiality, integrity, and availability (C:H/I:H/A:H) of the system. Although no known exploits are currently reported in the wild, the presence of this flaw in a core kernel streaming driver makes it a significant risk, especially for legacy systems still running Windows 10 1809. The vulnerability was reserved in June 2024 and published in July 2024, with no patch links currently available, indicating that organizations must monitor for updates from Microsoft. The CVSS v3.1 score of 7.8 reflects the high impact and moderate ease of exploitation. The flaw’s exploitation could allow attackers to bypass security controls, execute arbitrary code with elevated privileges, and potentially compromise entire networks.

For European organizations, the impact of CVE-2024-38057 is substantial, particularly for those still operating legacy Windows 10 Version 1809 systems. Successful exploitation can lead to full system compromise, allowing attackers to access sensitive data, disrupt operations, or deploy ransomware and other malware with elevated privileges. Critical infrastructure sectors such as energy, healthcare, finance, and government entities are at heightened risk due to the potential for widespread disruption and data breaches. The vulnerability undermines the confidentiality, integrity, and availability of affected systems, which can cascade into broader organizational risks including regulatory non-compliance (e.g., GDPR), reputational damage, and financial losses. Since the attack requires local access, insider threats or attackers who gain initial footholds via phishing or other means could leverage this vulnerability to escalate privileges and move laterally within networks. The lack of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as exploit code could emerge following public disclosure.

1. Prioritize patch management by closely monitoring Microsoft security advisories and apply patches immediately once released for Windows 10 Version 1809 systems. 2. If patches are not yet available, restrict local access to affected systems by enforcing strict user account controls and limiting administrative privileges. 3. Implement application whitelisting and endpoint detection and response (EDR) solutions to detect anomalous behavior indicative of privilege escalation attempts. 4. Conduct regular audits of user permissions and remove unnecessary local accounts or privileges. 5. Employ network segmentation to isolate legacy systems and reduce the attack surface. 6. Use virtualization-based security features where possible to contain potential exploits. 7. Educate users and administrators about the risks of local privilege escalation and enforce strong authentication mechanisms to prevent unauthorized access. 8. Maintain comprehensive logging and monitoring to detect suspicious activities related to kernel driver exploitation. 9. Plan for eventual upgrade or migration from Windows 10 Version 1809 to supported versions to reduce exposure to legacy vulnerabilities.