cve 2026 50321

The cve 2026 50321 tag covers reporting on a high-severity elevation-of-privilege vulnerability in the Windows USB driver. The flaw could allow an authenticated local attacker to gain extensive control of an affected PC or server. Microsoft addressed it in the July 14, 2026 security updates for Windows 10, Windows 11, and supported Windows Server releases. Coverage includes the Microsoft Security Update Guide details, the CVSS 3.1 base score of 7.8, and the Important severity rating. Microsoft assessed the vulnerability as neither publicly disclosed nor exploited when the updates were released, making patch status and affected Windows versions central themes for this tag.