CVE-2026-69495: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607

This vulnerability (CVE-2026-69495) involves a heap-based buffer overflow in the Windows Event Logging Service component of Microsoft Windows 10, including Version 1607 and several other builds. An attacker who successfully exploits this vulnerability can execute arbitrary code remotely without requiring privileges, though user interaction is required. The flaw affects multiple Windows 10 builds starting from 10.0.14393.0 up to but not including various patched builds (e.g., <10.0.14393.9512, <10.0.17763.9245, etc.). The vulnerability is tracked as CWE-122. Microsoft has published an official fix and the vulnerability is rated high severity with a CVSS 3.1 score of 8.8.

Successful exploitation allows remote code execution with high impact on confidentiality, integrity, and availability. The attacker can run arbitrary code on the affected system remotely, potentially leading to full system compromise. No known exploits in the wild have been reported at this time.

An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft for the affected Windows 10 versions as listed in the vendor advisory. Since this is a remote code execution vulnerability, timely patching is strongly recommended to prevent exploitation.