CVE-2025-24990

Windows Agere Modem Driver Elevation of Privilege Vulnerability

7.8 HighIn KEVPublic exploit

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

6.51%Down 0.7 points since Oct 15, 2025

What each source reports

CVE List Score used 7.8

Windows Agere Modem Driver Elevation of Privilege Vulnerability

Record: CVE-2025-24990
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
Weakness: CWE-822
Updated: 2026-11-02

EUVDEUVD-2025-34257 7.8

Record: EUVD-2025-34257
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
Updated: 2026-11-02

GitHub AdvisoriesGHSA-9g9x-fc99-93r6 7.8

Microsoft is aware of vulnerabilities in the third party Agere Modem driver that ships natively...

Record: GHSA-9g9x-fc99-93r6
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-822
Updated: 2026-11-02

CISA KEV No score

Microsoft Windows Untrusted Pointer Dereference Vulnerability

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.

Record: CVE-2025-24990
Weakness: CWE-822
Updated: 2026-11-02

NVD 7.8

Record: CVE-2025-24990
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-822
Updated: 2026-11-02

Affected products

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Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	moiz-2x/CVE-2025-24990_POC	2025-10-16
PoC in GitHub	sentinel-aidefense/CVE-2025-24990	2026-07-27

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, CISA KEV, NVD, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-24990 is a high vulnerability (CVSS 7.8) in Microsoft Windows, published October 14, 2025. CISA lists it as known to be exploited, since October 14, 2025. EUVD reports exploitation since October 14, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 6.51%, the 93rd percentile. No source names a fixed version.