#Security Vulnerability

**What privileges are required to exploit this vulnerability?** The attacker needs read access to the target site within SharePoint.

**What information could be disclosed through this vulnerability?** An attacker could potentially read small portions of heap memory.

The following mitigating factors may be helpful in your situation: To be vulnerable, a DNS server would need to have dynamic updates enabled.

**Why is Attack Complexity marked as High 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 uninitialized memory and kernel memory - unintentional read access to memory contents in kernel space from a user mode process.

**According to the CVSS score, the attack vector is Local. 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.

**What .NET component is affected by this denial of service vulnerability?** This vulnerability affects applications that utilize the Kestrel web server when processing certain HTTP/2 and HTTP/3 requests.

**What is meant by scope change for this particular vulnerability?** In this case, a successful attack could be performed from a low privilege Hyper-V guest. The attacker could traverse the guest's security boundary to execute code on the Hyper-V host execution environment.

**Is the Preview Pane an attack vector for this vulnerability?** No, the Preview Pane is not an attack vector.

**Why is Attack Complexity marked as High for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to gather information specific to environment of the targeted component.