CWE Code: 264
Vulnerability Type: privilege_escalation
CVSS Score: 6.9
CWE Name:  Permissions Privileges and Access Controls
Summary: valve steam client for windows through 2019-08-20 has weak folder permissions, leading to privilege escalation (to nt authority\system) via crafted use of createmountpoint.exe and setoplock.exe to leverage a toctou race condition.
Access Authentication: NONE
Access Complexity: MEDIUM
Access Vector: LOCAL
Impact (C/I/A): COMPLETE/COMPLETE/COMPLETE
Published Date: 2019-08-21
Last Modified Date: 2019-08-30