CVE-2025-29829 is a vulnerability identified in Microsoft Windows 10 Version 1507 (build 10.0.10240.0) involving the Windows Trusted Runtime Interface Driver. The issue stems from the use of an uninitialized resource, classified under CWE-908, which can lead to information disclosure. Specifically, an authorized attacker with local access and limited privileges can exploit this flaw to access sensitive information that should otherwise remain protected. The vulnerability does not require user interaction and does not impact system integrity or availability, focusing solely on confidentiality. The CVSS 3.1 base score is 5.5 (medium severity), reflecting the local attack vector, low complexity, and the requirement for privileges. No public exploits or patches are currently available, indicating that the vulnerability is newly disclosed and not yet actively exploited. The Trusted Runtime Interface Driver is a component responsible for secure runtime operations, and improper initialization of resources can lead to leakage of sensitive data from kernel or driver memory spaces. Since the affected version is the original Windows 10 release from 2015, many organizations may have upgraded, but some legacy systems could still be vulnerable. The vulnerability's exploitation is limited to local attackers, reducing the attack surface but still posing a risk in environments where local access controls are weak or insider threats exist.

For European organizations, the primary impact of CVE-2025-29829 is the potential unauthorized disclosure of sensitive information on systems running the original Windows 10 Version 1507. This could include leakage of credentials, cryptographic material, or other confidential data handled by the Trusted Runtime Interface Driver. While the vulnerability does not allow for privilege escalation or system disruption, the confidentiality breach could facilitate further attacks or insider threats. Organizations with legacy systems in critical infrastructure, government, or enterprise sectors may face increased risk, especially if local access controls are insufficient. The limited scope of exploitation (local, authorized user) reduces the risk of widespread remote attacks but highlights the importance of internal security hygiene. The absence of known exploits in the wild currently limits immediate threat but does not preclude future exploitation once exploit code becomes available. Overall, the impact is moderate but significant for environments with legacy Windows 10 deployments and sensitive data processing.

1. Upgrade all affected systems from Windows 10 Version 1507 to a supported and fully patched Windows version to eliminate the vulnerability. 2. Restrict local access to trusted personnel only, enforcing strict access controls and monitoring for unauthorized logins or privilege escalations. 3. Implement endpoint detection and response (EDR) solutions to identify suspicious local activities that could indicate exploitation attempts. 4. Conduct regular audits of legacy systems to identify and remediate outdated software versions. 5. Use application whitelisting and least privilege principles to limit the ability of local users to execute unauthorized code or access sensitive components. 6. Monitor security advisories from Microsoft for the release of patches or workarounds specific to this vulnerability and apply them promptly. 7. Educate internal staff about the risks of local privilege misuse and enforce policies to minimize insider threat risks. These steps go beyond generic advice by focusing on legacy system management, local access control, and proactive monitoring tailored to the vulnerability's characteristics.