Microsoft Windows Agere Modem Driver Elevation of Privilege Vulnerability

A vulnerability allowing elevation of privilege has been identified in the Agere Modem driver, which is included with supported Windows operating systems. This driver, ltmdm64.sys, has been removed in the October cumulative update. As a result, fax modem hardware relying on this driver will no longer function on Windows. Microsoft advises users to eliminate any dependencies on this hardware.

Impact

Exploitation of this vulnerability could lead to unauthorized elevation of privileges, allowing a user to gain administrator rights.

Remediation

Users can download the security update for this vulnerability through the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles KB5066873, KB5066875, KB5066836, KB5066837, KB5066780, KB5066793, KB5066586, and KB5066791.