CVE-2025-24990

Timeline

Detection, updates, and resolution for this record.

1. Oct 14, 2025 · Catalog

   Detected

   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 d

2. Oct 14, 2025 · CISA KEV

   Known exploited

   Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

3. Nov 4, 2025 · CISA KEV

   Remediation due

   Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

4. Jun 17, 2026 · Catalog

   Updated

   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 d

Affected

• cpe microsoft/windows 10 1507version unspecified
• cpe microsoft/windows 10 1607version unspecified
• cpe microsoft/windows 10 1809version unspecified
• cpe microsoft/windows 10 21h2version unspecified
• cpe microsoft/windows 10 22h2version unspecified
• cpe microsoft/windows 11 22h2version unspecified
• cpe microsoft/windows 11 23h2version unspecified
• cpe microsoft/windows 11 24h2version unspecified
• vendor Microsoft Windowsversion unspecified

Sources

• CISA KEVCVE-2025-24990

  Microsoft Windows Agere Modem Driver contains an untrusted pointer dereference vulnerability that allows for privilege escalation. An attacker who successfully exploited this vulnerability could gain administrator privileges.

  cisa.gov
• CVE.orgCVE-2025-24990

  Official CVE identifier

  cve.org
• FIRST EPSSCVE-2025-24990

  30-day exploitation probability 6.4%

  first.org
• NIST NVDCVE-2025-24990

  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 mod

  nvd.nist.gov

References

• CISA note · msrc.microsoft.com
• Vendor Advisory · msrc.microsoft.com
• CISA note · nvd.nist.gov
• US Government Resource · cisa.gov
• Third Party Advisory · vicarius.io
• Mitigation · vicarius.io