#microsoft

Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to perform spoofing over a network.

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** For an attacker to exploit this vulnerability, they would need to have knowledge of a specific operation that triggers a memory allocation failure, specifically a use after free.

**What type of information could be disclosed through this issue?** The vulnerability may allow limited exposure of data returned from outbound requests SharePoint makes on the attacker’s behalf, such as external HTTP responses or basic network metadata, but not internal network content or sensitive server information.

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

**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 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. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability.

Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.

Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.

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

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.