Microsoft Security Response Center

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

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

Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

**According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?** A user interacting with the file in multiple ways will cause the NTLM hash to be leaked. A few interactions which trigger this leak include: * Opening the parent folder in Explorer * Clicking the file (any mouse button) * Dragging the file * Deleting the file

**How could an attacker exploit this vulnerability?** A remote, unauthenticated attacker could send a crafted event that triggers unsafe object deserialization in a legacy serialization mechanism, resulting in remote code execution.

Improper validation of specified type of input in Windows Authentication Methods allows an authorized attacker to elevate privileges locally.

Improper access control in Microsoft Windows Search Component allows an authorized attacker to deny service locally.

**According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?** An attacker must send the user a malicious file and convince them to open it.

**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.

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices Platform Service allows an authorized attacker to elevate privileges locally.