Microsoft Security Response Center

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.

Exposure of sensitive information to an unauthorized actor in Microsoft Dynamics 365 (on-premises) allows an unauthorized attacker to disclose information over a network.

**What privileges could be gained by an attacker who successfully exploited the vulnerability?** An attacker could use this vulnerability to elevate privileges from a Low Integrity Level in a contained ("sandboxed") execution environment to a Medium Integrity Level. Please refer to AppContainer isolation and Mandatory Integrity Control for more information.

**What privileges could be gained by an attacker who successfully exploited the vulnerability?** An attacker could use this vulnerability to elevate privileges from a Low Integrity Level in a contained ("sandboxed") execution environment to a Medium Integrity Level. Please refer to AppContainer isolation and Mandatory Integrity Control for more information.

Access of resource using incompatible type ('type confusion') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

Use of uninitialized resource in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

**How could an attacker exploit this vulnerability?** An authenticated attacker could create a crafted vhdx file and can call the vhdmp api with vhdx as one of the arguments.

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