Description
<p>A security feature bypass vulnerability exists in Windows Defender Application Control (WDAC) which could allow an attacker to bypass WDAC enforcement. An attacker who successfully exploited this vulnerability could execute PowerShell commands that would be blocked by WDAC.</p> <p>To exploit the vulnerability, an attacker need administrator access on a local machine where PowerShell is running. The attacker could then connect to a PowerShell session and send commands to execute arbitrary code.</p> <p>The update addresses the vulnerability by correcting how PowerShell commands are validated when WDAC protection is enabled.</p>
CVSS breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
E
Physical
RL
O
RC
Changed
Affected products
- Microsoft / powershell_core
- Microsoft / Windows 101709 – 1709
- Microsoft / Windows 101903 – 1903
- Microsoft / windows_10_1607
- Microsoft / windows_10_1607
- Microsoft / windows_10_1803
- Microsoft / windows_10_1803
- Microsoft / windows_10_1809
- Microsoft / windows_10_1809
- Microsoft / windows_10_1809
- Microsoft / windows_10_1909
- Microsoft / windows_10_1909
- Microsoft / windows_server_1903
- Microsoft / windows_server_1909
- Microsoft / windows_server_2004
- Microsoft / Windows Server 2016
- Microsoft / Windows Server 2019