CVE-2024-30012 is a security vulnerability identified in the Windows Mobile Broadband Driver component of Microsoft Windows 10 Version 1809 (build 10.0.17763.0). The vulnerability is classified under CWE-190, which pertains to integer overflow or wraparound issues. An integer overflow occurs when an arithmetic operation attempts to create a numeric value that is outside the range that can be represented with a given number of bits, causing the value to wrap around to an unexpected number. In this context, the flaw exists within the Mobile Broadband Driver, which handles cellular network communications on Windows devices. Exploiting this vulnerability could allow an attacker to execute arbitrary code remotely without requiring any user interaction or privileges. The CVSS v3.1 base score is 6.8 (medium severity), with the vector indicating that the attack vector is physical (AV:P), attack complexity is low (AC:L), no privileges are required (PR:N), no user interaction is needed (UI:N), and the impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H). The vulnerability is exploitable remotely but requires physical proximity to the device, likely due to the nature of the Mobile Broadband Driver interacting with cellular signals. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability was reserved in March 2024 and published in May 2024. Given the affected Windows version is 1809, which is an older release, many systems may remain unpatched or unsupported, increasing exposure risk. The vulnerability could be leveraged to gain full system control, potentially leading to data theft, system disruption, or further network compromise.

For European organizations, the impact of CVE-2024-30012 could be significant, especially for those relying on Windows 10 Version 1809 devices with Mobile Broadband capabilities. Sectors such as telecommunications, critical infrastructure, government agencies, and enterprises with mobile workforce devices are particularly at risk. Successful exploitation could lead to remote code execution, allowing attackers to compromise device confidentiality, integrity, and availability. This could result in unauthorized access to sensitive data, disruption of business operations, and potential lateral movement within corporate networks. Since the vulnerability requires physical proximity (due to the physical attack vector), organizations with devices in public or semi-public environments (e.g., field workers, mobile employees, or IoT devices with cellular connectivity) are more vulnerable. The lack of user interaction and privilege requirements lowers the barrier for exploitation once physical access is possible. The medium CVSS score reflects the balance between the high impact and the physical attack vector limitation. However, the absence of known exploits in the wild currently reduces immediate risk but does not eliminate it, especially as threat actors may develop exploits over time.

1. Upgrade and Patch: Organizations should prioritize upgrading devices from Windows 10 Version 1809 to a more recent, supported Windows version where this vulnerability is patched. Since no patch links are currently available, monitoring Microsoft’s official security advisories for updates is critical. 2. Device Inventory and Segmentation: Identify all devices running Windows 10 Version 1809 with Mobile Broadband capabilities and isolate or segment them from critical network resources to limit potential lateral movement. 3. Physical Security Controls: Enhance physical security measures to prevent unauthorized physical proximity to devices, especially in public or unsecured locations. This includes secure storage, access controls, and surveillance. 4. Network Monitoring: Implement network anomaly detection focused on cellular network interfaces and unusual outbound connections from mobile broadband devices. 5. Disable Unused Interfaces: Where feasible, disable Mobile Broadband drivers or interfaces on devices that do not require cellular connectivity to reduce the attack surface. 6. Endpoint Detection and Response (EDR): Deploy EDR solutions capable of detecting suspicious activities related to driver exploitation or privilege escalation attempts. 7. User Awareness: Educate users about the risks of physical proximity attacks and encourage reporting of lost or stolen devices promptly. These targeted mitigations go beyond generic patching advice by addressing the physical attack vector and the specific nature of the affected component.