CVE-2026-69394: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607

This vulnerability (CVE-2026-69394) involves a heap-based buffer overflow in the Windows Audio Service component of Microsoft Windows 10, including Version 1607 and several other builds. The flaw enables an authorized local attacker to gain elevated privileges by exploiting the buffer overflow condition. The vulnerability is tracked under CWE-122 (Heap-based Buffer Overflow) and has a CVSS 3.1 base score of 7.0, indicating high severity. Microsoft has issued an official fix for this vulnerability, and the vendor advisory is available at the Microsoft Security Response Center.

An authorized local attacker can exploit this heap-based buffer overflow to elevate privileges on the affected Windows 10 systems. This could allow the attacker to execute code with higher privileges than intended, potentially compromising system integrity and security. There are no known exploits in the wild at this time.

An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft as detailed in the vendor advisory to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.