CVE-2026-69801: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1809

This vulnerability involves a heap-based buffer overflow in the Windows Audio Service component of Microsoft Windows 10 Version 1809 and several other specific builds. An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The CVSS 3.1 vector indicates low attack complexity and low privileges required, with no user interaction needed. The vulnerability impacts confidentiality, integrity, and availability with high severity. Microsoft has published an official fix for the affected versions.

An authorized local attacker can exploit this heap-based buffer overflow to elevate privileges, potentially gaining administrative rights on the affected system. This could allow the attacker to execute arbitrary code with elevated privileges, compromising system confidentiality, integrity, and availability.

Microsoft has released an official fix for this vulnerability. Users and administrators should apply the security updates provided by Microsoft for the affected Windows 10 versions as soon as possible to mitigate the risk.