CVE-2024-30001 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 as an integer overflow or wraparound issue (CWE-190), which 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 unexpected behavior. In this case, the flaw exists in the processing logic of the Mobile Broadband Driver, which handles cellular modem communications. An attacker who can send specially crafted input to this driver could trigger the integer overflow, potentially leading to remote code execution (RCE) without requiring any user interaction or privileges. The CVSS v3.1 base score is 6.8, indicating a medium severity level, with a vector of AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, meaning the attack requires physical proximity (local network or Bluetooth), low attack complexity, no privileges, and no user interaction, but can result in high confidentiality, integrity, and availability impacts. No known exploits are currently reported in the wild, and no official patches have been linked yet. The vulnerability was reserved in March 2024 and published in May 2024. This flaw could allow attackers to execute arbitrary code remotely on affected systems, potentially leading to full system compromise, data theft, or denial of service.

For European organizations, this vulnerability poses a significant risk primarily to systems still running Windows 10 Version 1809, which is an older release but may remain in use in certain industrial, governmental, or legacy environments. The Mobile Broadband Driver is typically used in devices with cellular connectivity, such as laptops, tablets, or embedded systems relying on mobile broadband for network access. Exploitation could allow attackers to remotely execute code, leading to unauthorized access, data breaches, disruption of services, or lateral movement within networks. Sectors relying on mobile broadband for remote connectivity, including transportation, utilities, and critical infrastructure, could be particularly impacted. Given the lack of required user interaction and privileges, the attack surface is broader than typical user-targeted exploits. The medium CVSS score reflects the requirement for physical proximity, which somewhat limits remote exploitation but still presents a tangible threat in environments where attackers can gain network access or be nearby. The absence of known exploits suggests limited immediate risk but also highlights the importance of proactive mitigation to prevent future exploitation. Organizations with legacy systems or those slow to update may face increased exposure.

1. Prioritize upgrading affected systems to a supported and fully patched Windows version beyond 1809, as Microsoft has ended mainstream support for this release, reducing the likelihood of future patches. 2. For environments where upgrading is not immediately feasible, implement network segmentation to isolate devices using Windows 10 Version 1809 with mobile broadband capabilities, limiting attacker access. 3. Restrict physical and network access to devices with mobile broadband drivers, especially in sensitive or critical environments, to reduce the risk of proximity-based exploitation. 4. Monitor network traffic for unusual or malformed packets targeting mobile broadband interfaces, employing intrusion detection systems (IDS) tuned for cellular driver anomalies. 5. Disable or uninstall mobile broadband drivers on devices where cellular connectivity is not required to reduce the attack surface. 6. Maintain strict endpoint protection and behavior monitoring to detect potential exploitation attempts or abnormal process execution. 7. Engage with Microsoft support channels for any out-of-band patches or mitigations and apply them promptly once available. 8. Educate IT and security teams about the vulnerability specifics to ensure rapid response and incident handling if exploitation is suspected.