#vulnerability

**How could an attacker exploit this vulnerability?** The attacker would be able to bypass the protection in Outlook that prevents a potentially dangerous file extension from being attached enabling a remote code execution.

**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.

**How could an attacker exploit the vulnerability?** An authenticated attacker could make specially crafted API calls that lead to a Denial of Service.

**How could an attacker exploit this vulnerability?** An unauthenticated attacker could use a specially crafted application to leverage a protocol vulnerability in Windows Kerberos to perform a denial of service attack against the target.

**What privileges could be gained by an attacker who successfully exploited this vulnerability?** An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

**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 an out of bounds read in the caller's address space memory.

**Are there any additional steps that I need to follow to be protected from this vulnerability?** The changes to address this vulnerability updated Virtual Secure Mode components. The policy described in Guidance for blocking rollback of Virtualization-based Security (VBS) related security updates has been updated to account for the latest changes. If you deployed this policy, then you'll need to redeploy using the updated policy.

**What privileges could be gained by an attacker who successfully exploited the vulnerability?** An attacker who successfully exploits this vulnerability could elevate their privileges to perform commands as Root in 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 win a race condition.

**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 sensitive information.