Description
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.
Fax modem hardware dependent on this specific driver will no longer work on Windows.
Microsoft recommends removing any existing dependencies on this hardware.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 – < 10.0.10240.21161 | 10.0.10240.21161 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – < 10.0.14393.8519 | 10.0.14393.8519 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – < 10.0.17763.7919 | 10.0.17763.7919 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – < 10.0.19044.6456 | 10.0.19044.6456 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – < 10.0.19045.6456 | 10.0.19045.6456 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – < 10.0.22621.6060 | 10.0.22621.6060 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – < 10.0.22631.6060 | 10.0.22631.6060 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.6899 | 10.0.26100.6899 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – < 10.0.26200.6899 | 10.0.26200.6899 |
| Microsoft | Windows Server 2008 R2 Service Pack 1 | 6.1.7601.0 – < 6.1.7601.27974 | 6.1.7601.27974 |
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | 6.1.7601.0 – < 6.1.7601.27974 | 6.1.7601.27974 |
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.6003.0 – < 6.0.6003.23571 | 6.0.6003.23571 |
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | 6.0.6003.0 – < 6.0.6003.23571 | 6.0.6003.23571 |
| Microsoft | Windows Server 2012 | 6.2.9200.0 – < 6.2.9200.25722 | 6.2.9200.25722 |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 – < 6.2.9200.25722 | 6.2.9200.25722 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 – < 6.3.9600.22824 | 6.3.9600.22824 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 – < 6.3.9600.22824 | 6.3.9600.22824 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – < 10.0.14393.8519 | 10.0.14393.8519 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – < 10.0.14393.8519 | 10.0.14393.8519 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – < 10.0.17763.7919 | 10.0.17763.7919 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – < 10.0.17763.7919 | 10.0.17763.7919 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – < 10.0.20348.4294 | 10.0.20348.4294 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – < 10.0.25398.1913 | 10.0.25398.1913 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.6899 | 10.0.26100.6899 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.6899 | 10.0.26100.6899 |
Advisories 3
- WID-SEC-2025-2307 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 25, 2025
- NCSC-2025-0310 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Oct 24, 2025
- MSRC-CVE-2025-24052 Windows Agere Modem Driver Elevation of Privilege Vulnerability Microsoft Security Response Center · Oct 14, 2025
References
- Windows Agere Modem Driver Elevation of Privilege Vulnerability vendor-advisory patch