CVE-2026-69592: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607

CVE-2026-69592 is a heap-based buffer overflow vulnerability classified under CWE-122 in the Windows Universal Disk Format File System Driver (UDFS). It affects various builds of Windows 10, including Version 1607 and later builds up to certain update versions. The vulnerability permits an authorized local attacker to elevate privileges by exploiting the buffer overflow condition. The CVSS v3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. The vulnerability is documented by Microsoft with an official advisory but no explicit patch links were provided in the input data.

Successful exploitation of this vulnerability allows an authorized local attacker to elevate privileges, potentially gaining higher system rights than intended. This can lead to full system compromise, including unauthorized access to sensitive data, modification of system configurations, and disruption of system availability. The vulnerability affects confidentiality, integrity, and availability with high impact ratings.

Microsoft has published an advisory for CVE-2026-69592. Although no explicit patch links were provided in the input data, the presence of a vendor advisory indicates that remediation guidance or fixes are available or forthcoming. Users should consult the official Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69592 for the latest patch and mitigation instructions. Until patched, limiting local user privileges and restricting access to affected systems can reduce risk.