Microsoft Security Response Center

**How could an attacker exploit this vulnerability?** For successful exploitation, a malicious certificate needs to be imported on an affected system. An authenticated attacker could remotely upload a certificate to the Server service.

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to win a race condition.

**What security feature could be bypassed by this vulnerability?** An attacker who successfully exploited this vulnerability could bypass Secure Boot.

**Determine if the Print Spooler service is running** Run the following in Windows PowerShell: Get-Service -Name Spooler If the Print Spooler is running or if the service is not disabled, follow these steps: **Stop and disable the Print Spooler service** If stopping and disabling the Print Spooler service is appropriate for your environment, run the following in Windows PowerShell: Stop-Service -Name Spooler -Force Set-Service -Name Spooler -StartupType Disabled **Impact of workaround** Stopping and disabling the Print Spooler service disables the ability to print both locally and remotely.

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to win a race condition.

**According to the CVSS metric, privileges required is high (PR:H). What privileges does an attacker require to exploit this vulnerability?** Successful exploitation of this vulnerability requires an attacker to compromise admin credentials to one of the VMs associated with the configuration server.

**According to the CVSS metric, privileges required is low (PR:L). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to authenticate to the management console appliance and to have an integration token documented here: Defender for IoT sensor and management console APIs.

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to invest time in repeated exploitation attempts through sending constant or intermittent data.

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to take additional actions prior to exploitation to prepare the target environment.

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to take additional actions prior to exploitation to prepare the target environment.