Microsoft Security Response Center

Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors might be helpful in your situation: The Windows message queuing service, which is a Windows component, needs to be enabled for a system to be exploitable by this vulnerability. This feature can be added via the Control Panel. You can check to see if there is a service running named **Message Queuing** and TCP port 1801 is listening on the machine.

Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors might be helpful in your situation: The Windows message queuing service, which is a Windows component, needs to be enabled for a system to be exploitable by this vulnerability. This feature can be added via the Control Panel. You can check to see if there is a service running named **Message Queuing** and TCP port 1801 is listening on the machine.

**What kind of security feature could be bypassed by successfully exploiting this vulnerability?** An attacker who successfully exploited this vulnerability could bypass the Fast Identity Online (FIDO) secure authentication feature.

**What type of information could be disclosed by this vulnerability?** The type of information that could be disclosed if an attacker successfully exploited this vulnerability is memory layout - the vulnerability allows an attacker to collect information that facilitates predicting addressing of the memory.

**According to the CVSS metric, user interaction is required (UI:R). What does that mean for this vulnerability?** To exploit this vulnerability, an attacker would need to send a specially crafted malicious MSMQ packet to a MSMQ server. The vulnerability is triggered when a user on the target machine accesses message queuing, which could result in a denial of service.

**According to the CVSS metric, user interaction is required (UI:R). What does that mean for this vulnerability?** To exploit this vulnerability, an attacker would need to send a specially crafted malicious MSMQ packet to a MSMQ server. The vulnerability is triggered when a user on the target machine accesses message queuing, which could result in a denial of service.

**According to the CVSS metric, user interaction is required (UI:R). What does that mean for this vulnerability?** To exploit this vulnerability, an attacker would need to send a specially crafted malicious MSMQ packet to a MSMQ server. The vulnerability is triggered when a user on the target machine accesses message queuing, which could result in a denial of service.

**What type of information could be disclosed by this vulnerability?** An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.

**What type of information could be disclosed by this vulnerability?** An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.

**What type of information could be disclosed by this vulnerability?** An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.