CVE-2024-30071 is a buffer over-read vulnerability classified under CWE-126 found in the Windows Remote Access Connection Manager on Windows 10 Version 1809 (build 10.0.17763.0). This vulnerability arises when the component improperly handles memory buffers, allowing an attacker with local privileges to read memory beyond the intended buffer boundaries. The flaw does not require user interaction but does require the attacker to have low-level privileges on the system, and the attack complexity is high, indicating that exploitation is non-trivial. Successful exploitation leads to information disclosure, potentially leaking sensitive data from memory, but does not affect system integrity or availability. The CVSS 3.1 base score is 4.7 (medium), reflecting the limited attack vector (local), high complexity, and partial impact on confidentiality. No public exploits or active exploitation have been reported to date. The vulnerability was reserved in March 2024 and published in July 2024, with no patch links currently provided, suggesting that mitigation may require upgrading or awaiting official updates. This vulnerability is relevant primarily to legacy Windows 10 systems still in operation, particularly in environments where local user access cannot be fully controlled.

For European organizations, the primary impact of CVE-2024-30071 is the potential unauthorized disclosure of sensitive information residing in memory on affected Windows 10 Version 1809 systems. This could include credentials, cryptographic keys, or other confidential data, which may facilitate further attacks if leveraged by malicious insiders or local attackers. Although the vulnerability does not allow remote exploitation or system compromise directly, environments with shared or multi-user access, such as enterprise desktops, kiosks, or terminal servers, could be at risk. The impact is more pronounced in sectors handling sensitive data, such as finance, healthcare, and government, where confidentiality breaches can lead to regulatory penalties under GDPR and reputational damage. Since Windows 10 Version 1809 is an older release, organizations still running it may face increased risk due to lack of ongoing support and security updates. The absence of known exploits reduces immediate risk but does not eliminate the threat, especially if attackers develop proof-of-concept code.

1. Upgrade affected systems to a supported and fully patched version of Windows 10 or Windows 11 to eliminate exposure to this vulnerability. 2. If upgrading is not immediately feasible, restrict local user access to affected machines by enforcing strict access controls and limiting administrative privileges. 3. Implement endpoint detection and response (EDR) solutions to monitor for unusual local activity that could indicate exploitation attempts. 4. Apply application whitelisting and privilege management to prevent unauthorized code execution by low-privilege users. 5. Regularly audit and review user accounts and permissions to minimize the number of users with local access. 6. Stay informed on Microsoft security advisories for the release of patches or workarounds addressing this vulnerability. 7. For critical systems that must remain on Windows 10 Version 1809, consider network segmentation to isolate them from less trusted environments. 8. Educate IT staff about the risks of legacy OS usage and the importance of timely patching and upgrades.