Microsoft Windows Untrusted Pointer Dereference Vulnerability
Microsoft — Windows 10 Version 1507
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.
7.8
6.3%
Vector breakdown
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published
- Oct 14, 2025
- Modified
- Jun 17, 2026
- Added to KEV
- Oct 14, 2025
- Federal patch due
- Nov 4, 2025
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
2 foundWeaponization
Public repositories whose name or description references CVE-2025-24990, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
References
Frequently asked questions
What is CVE-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 modem hardware dependent on this specific driver will no longer work on Windows. Microsoft recommends removing any existing dependencies on this hardware.
How severe is CVE-2025-24990?
CVE-2025-24990 has a CVSS base score of 7.8 out of 10 (CVSS 3.1).
Is CVE-2025-24990 actively exploited in the wild?
Yes. CVE-2025-24990 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Oct 14, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-24990?
6.3% - meaning FIRST.org's EPSS model estimates a 6.3% probability this vulnerability will be exploited in the wild within 30 days (93% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2025-24990?
We found 2 public GitHub repositories referencing CVE-2025-24990, though none matched a known Nuclei template or Metasploit module at last check. Review each one before relying on it - see the proof-of-concept section above.
What type of vulnerability is CVE-2025-24990?
CVE-2025-24990 is classified under CWE-822 (CWE-822: Untrusted Pointer Dereference).
Cross-checked against
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