CVE-2026-70346 | Microsoft Windows up to Server 2025 Windows Installer buffer overflow

A vulnerability identified as very critical has been detected in Microsoft Windows. Affected by this issue is some unknown functionality of the component Windows Installer. This manipulation causes buffer overflow.

This vulnerability appears as CVE-2026-70346. The attack requires local access. There is no available exploit.

It is suggested to install a patch to address this issue.