MITRE: CVE-2023-31096 Windows Agere Soft Modem Driver Elevation of Privilege Vulnerability
CVE-2023-31096 is fixed in 35 products on 1 platform, first by KB5073722, released January 13, 2026. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.
<p>Microsoft is aware of vulnerabilities in the third party Agere Soft Modem drivers that ship natively with supported Windows operating systems. This is an announcement of the removal of agrsm64.sys and agrsm.sys drivers. The drivers have been removed in the January 2026 cumulative update.</p> <p><strong>Soft modem hardware dependent on these specific drivers will no longer work on Windows.</strong></p> <p>Microsoft recommends removing any existing dependencies on this hardware.</p> <p>This vulnerability was documented in 2023 via a <a href="https://www.cve.org/CVERecord?id=CVE-2023-31096">CVE-2023-31096</a> issued by MITRE.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows 10 Version 1607 for 32-bit Systems | 14393.8783 | KB5073722 | Jan 13, 2026 |
| Windows 10 Version 1607 for x64-based Systems | 14393.8783 | KB5073722 | Jan 13, 2026 |
| Windows 10 Version 1809 for 32-bit Systems | 17763.8276 | KB5073723 | Jan 13, 2026 |
| Windows 10 Version 1809 for x64-based Systems | 17763.8276 | KB5073723 | Jan 13, 2026 |
| Windows 10 Version 21H2 for 32-bit Systems | KB5073724 | Jan 13, 2026 | |
| Windows 10 Version 21H2 for ARM64-based Systems | KB5073724 | Jan 13, 2026 | |
| Windows 10 Version 21H2 for x64-based Systems | KB5073724 | Jan 13, 2026 | |
| Windows 10 Version 22H2 for 32-bit Systems | KB5073724 | Jan 13, 2026 | |
| Windows 10 Version 22H2 for ARM64-based Systems | KB5073724 | Jan 13, 2026 | |
| Windows 10 Version 22H2 for x64-based Systems | KB5073724 | Jan 13, 2026 | |
| Windows 11 Version 23H2 for ARM64-based Systems | 22631.6491 | KB5073455 | Jan 13, 2026 |
| Windows 11 Version 23H2 for x64-based Systems | 22631.6491 | KB5073455 | Jan 13, 2026 |
| Windows 11 Version 24H2 for ARM64-based Systems | KB5074109 | Jan 13, 2026 | |
| Windows 11 Version 24H2 for x64-based Systems | KB5074109 | Jan 13, 2026 | |
| Windows 11 Version 25H2 for ARM64-based Systems | KB5074109 | Jan 13, 2026 | |
| Windows 11 Version 25H2 for x64-based Systems | KB5074109 | Jan 13, 2026 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB5073699 | Jan 13, 2026 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB5073695 | Jan 13, 2026 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB5073699 | Jan 13, 2026 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB5073695 | Jan 13, 2026 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB5073700 | Jan 13, 2026 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB5073697 | Jan 13, 2026 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | KB5073700 | Jan 13, 2026 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | KB5073697 | Jan 13, 2026 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB5073700 | Jan 13, 2026 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB5073697 | Jan 13, 2026 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB5073700 | Jan 13, 2026 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB5073697 | Jan 13, 2026 | |
| Windows Server 2012 | KB5073698 | Jan 13, 2026 | |
| Windows Server 2012 (Server Core installation) | KB5073698 | Jan 13, 2026 | |
| Windows Server 2012 R2 | KB5073696 | Jan 13, 2026 | |
| Windows Server 2012 R2 (Server Core installation) | KB5073696 | Jan 13, 2026 | |
| Windows Server 2016 | 14393.8783 | KB5073722 | Jan 13, 2026 |
| Windows Server 2016 (Server Core installation) | 14393.8783 | KB5073722 | Jan 13, 2026 |
| Windows Server 2019 | 17763.8276 | KB5073723 | Jan 13, 2026 |
| Windows Server 2019 (Server Core installation) | 17763.8276 | KB5073723 | Jan 13, 2026 |
| Windows Server 2022 | 20348.4648 | KB5073457 | Jan 13, 2026 |
| Windows Server 2022 (Server Core installation) | 20348.4648 | KB5073457 | Jan 13, 2026 |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 25398.2092 | KB5073450 | Jan 13, 2026 |
| Windows Server 2025 | 26100.32230 | KB5073379 | Jan 13, 2026 |
| Windows Server 2025 (Server Core installation) | 26100.32230 | KB5073379 | Jan 13, 2026 |
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