CVE-2026-24282 is a security vulnerability classified as CWE-125 (Out-of-bounds Read) affecting Microsoft Windows 10 Version 1607, specifically build 10.0.14393.0. The flaw exists in the Push Message Routing Service, a component responsible for handling push notifications and message routing within the OS. An out-of-bounds read occurs when the service reads memory outside the allocated buffer boundaries, which can lead to disclosure of sensitive information stored in adjacent memory regions. The vulnerability requires an attacker to have authorized local access (low privileges) but does not require user interaction, making it a local privilege information disclosure vector. The vulnerability does not allow code execution or system disruption but compromises confidentiality by leaking potentially sensitive data. The CVSS v3.1 score of 5.5 reflects medium severity, with attack vector being local (AV:L), low attack complexity (AC:L), and privileges required (PR:L). No patches or exploit code are currently publicly available, and no known exploits in the wild have been reported. This vulnerability primarily affects legacy Windows 10 systems that have not been updated beyond version 1607, which is an older Long-Term Servicing Channel (LTSC) release. The issue highlights the importance of maintaining up-to-date systems and monitoring local services that handle inter-process communications and message routing.

The primary impact of CVE-2026-24282 is unauthorized disclosure of sensitive information on affected Windows 10 Version 1607 systems. An attacker with local access but limited privileges can exploit the out-of-bounds read to access memory contents beyond intended buffers, potentially exposing credentials, cryptographic keys, or other sensitive data stored in memory. Although the vulnerability does not allow privilege escalation, code execution, or denial of service, the information disclosure can facilitate further attacks such as privilege escalation or lateral movement within an organization’s network. Organizations still running Windows 10 Version 1607, especially in environments with sensitive data or regulatory requirements, face increased risk of data leakage. The scope is limited to local attackers, so remote exploitation is not feasible. However, insider threats or compromised user accounts could leverage this vulnerability to gain unauthorized access to confidential information. The lack of known exploits reduces immediate risk, but the medium severity score and potential for sensitive data exposure necessitate timely remediation.

To mitigate CVE-2026-24282, organizations should prioritize upgrading from Windows 10 Version 1607 to a supported and updated Windows 10 or Windows 11 version where this vulnerability is patched. If upgrading is not immediately feasible, implement strict access controls to limit local user privileges and restrict access to systems running this legacy OS. Employ application whitelisting and endpoint detection to monitor for suspicious local activity. Disable or restrict the Push Message Routing Service if it is not essential for business operations, reducing the attack surface. Regularly audit local accounts and enforce strong authentication policies to prevent unauthorized local access. Monitor system logs for unusual memory access patterns or service crashes that could indicate exploitation attempts. Finally, stay informed on vendor advisories for any forthcoming patches or mitigations related to this vulnerability.