Microsoft Security Response Center

**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, user interaction is required (UI:R). What interaction would the user have to do?** An attacker would have to send the victim a malicious file that the victim would have to execute.

**What kind of security feature could be bypassed by successfully exploiting this vulnerability?** An attacker who successfully exploited this vulnerability could bypass Office macro policies used to block untrusted or malicious files.

**According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?** The word **Remote** in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. For example, when the score indicates that the **Attack Vector** is **Local** and **User Interaction** is **Required**, this could describe an exploit in which an attacker, through social engineering, convinces a victim to download and open a specially crafted file from a website which leads to a local attack on their computer.

**According to the CVSS metric, the Attack Vector is Physical (AV:P). What does that mean for this vulnerability?** An attacker needs physical access to the target computer to plug in a malicious USB drive.

**What type of information could be disclosed by this vulnerability?** Exploiting this vulnerability could allow the disclosure of certain memory address within kernel space. Knowing the exact location of kernel memory could be potentially leveraged by an attacker for other malicious activities.

**What type of information could be disclosed by this vulnerability?** Exploiting this vulnerability could allow the disclosure of certain memory address within kernel space. Knowing the exact location of kernel memory could be potentially leveraged by an attacker for other malicious activities.

**Is the Preview Pane an attack vector for this vulnerability?** Yes, the Preview Pane is an attack vector.

**According to the CVSS metric, the attack complexity is high (AC:H) and privileges required are low (PR:L). What does that mean for this vulnerability?** An attacker must gain access to the victim user's Microsoft Outlook account by compromising or stealing their login credential and then install a malicious form prior to exploiting the vulnerability successfully.

**According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?** Exploitation of this vulnerability requires that an attacker convinces a user to open a maliciously crafted package file in Visual Studio.