Microsoft Security Response Center

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

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

Untrusted pointer dereference in Windows Kernel allows an unauthorized attacker to elevate privileges locally.

Use after free in Windows Resilient File System (ReFS) Deduplication Service allows an unauthorized attacker to elevate privileges locally.

Use of uninitialized resource in Windows Management Services allows an authorized attacker to disclose information locally.

Use after free in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.

**What privileges could be gained by an attacker who successfully exploited the vulnerability?** An attacker who successfully exploited this vulnerability could execute code in the security context of the “NT AUTHORITY\\Network Service” account.

Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

**What type of information could be disclosed by this vulnerability?** An attacker who successfully exploited this vulnerability could potentially read portions of heap memory.