CVE-2019-14743: Valvesoftware Steam Client

Medium severity, CVSS 6.6. EPSS: 0.6% chance of exploitation in the next 30 days.

In Valve Steam Client for Windows through 2019-08-07, HKLM\SOFTWARE\Wow6432Node\Valve\Steam has explicit "Full control" for the Users group, which allows local users to gain NT AUTHORITY\SYSTEM access.

Affected products

• Valvesoftware Steam Client: up to and including 2019-08-07

Published 2019-08-07. Last modified 2026-06-17.