CVE-2025-24990
Windows Agere Modem Driver Elevation of Privilege Vulnerability
Reported by microsoft · Published October 14, 2025
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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| windows_10_1607 | microsoft | 10.0.14393.8519 |
| windows_11_23h2 | microsoft | 10.0.22631.6060 |
| Windows 11 Version 24H2 | Microsoft | 10.0.26100.6899 |
| Windows Server 2012 | Microsoft | 6.2.9200.25722 |
| Windows Server 2008 Service Pack 2 (Server Core installation) | Microsoft | 6.0.6003.23571 |
| windows_11_2H2 | microsoft | 10.0.26200.6899 |
| windows_10_21h2 | microsoft | 10.0.19044.6456 |
| Windows Server 2025 (Server Core installation) | Microsoft | 10.0.26100.6899 |
| windows_server_23h2 | microsoft | 10.0.25398.1913 |
| Windows Server 2012 R2 | Microsoft | 6.3.9600.22824 |
| windows_server_2016 | microsoft | 10.0.14393.8519 |
| Windows 10 Version 21H2 | Microsoft | 10.0.19044.6456 |
33 more packages have a fixed version. See every fix in Lookup.
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 |
| Microsoft | Windows Server 2008 R2 Service Pack 1 | 6.1.7601.0 |
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | 6.1.7601.0 |
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.6003.0 |
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | 6.0.6003.0 |
| Microsoft | Windows Server 2012 | 6.2.9200.0 |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 |
…and 48 more
Timeline
- Oct 14, 2025 CISA KEV Added
- Oct 14, 2025 VulnCheck KEV Exploitation (3 in total, the first dated here)
- Oct 14, 2025 CVE Published
- Oct 15, 2025 EPSS Score (30 in total, the first dated here)
- Oct 20, 2025 VulnCheck XDB Entry
- Mar 11, 2026 Security Advisory (140 in total, the first dated here)
- Jun 16, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2025-24990
vulnetix vdb fixes CVE-2025-24990
Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2025-24990/fixes/registry"
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References
- Windows Agere Modem Driver Elevation of Privilege Vulnerability vendor-advisorypatch
- https://www.vicarius.io/vsociety/posts/cve-2025-24990-detection-script-elevation-of-privilege-vulnerability-in-agere-modem-driver-affecting-windows url
- https://www.vicarius.io/vsociety/posts/cve-2025-24990-mitigation-script-elevation-of-privilege-vulnerability-in-agere-modem-driver-affecting-windows url
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24990 advisory