Product:
Agere Modem driver
Summary
Microsoft is aware of vulnerabilities in the third party Agere Modem driver that ships natively with supported Windows operating systems. This is an announcement of the upcoming removal of ltmdm64.sys driver. The driver has been removed in the October cumulative update, and fax modem hardware dependent on this specific driver will no longer work on Windows.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 7.8 | CVE-2025-24990 |
Exploitation
The vulnerability can be exploited locally by an attacker who has access to the affected system. Since the driver is integral to the operation of certain fax modem hardware, an attacker could leverage this dependency to disrupt services or cause denial of functionality for users relying on this hardware.
Affected Products
- Agere Modem driver: This driver is essential for the operation of certain fax modem hardware on Windows systems.
Mitigation
Microsoft recommends removing any existing dependencies on the Agere Modem driver to avoid disruptions in service. Users should consider alternative solutions for faxing that do not rely on this driver.