cve 2026 50453

The cve 2026 50453 tag covers a Microsoft Windows security flaw in the USB Audio Class driver, usbaudio.sys. The vulnerability is an out-of-bounds read that can expose information when an attacker has physical access to a computer. Microsoft rates it Important and assigns a CVSS 3.1 score of 6.1. The attacker does not need privileges or user interaction, but physical access is required. Microsoft addressed the issue in the July 14, 2026 security updates. This archive is relevant to administrators and users managing PCs or servers that accept USB peripherals in public, shared, or otherwise uncontrolled environments, where prompt update deployment is the recommended response.