CVE-2025-24990

Name: CVE-2025-24990
Creator: NVD / NIST
Published: 2025-10-14T17:15:39.193+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10Actively ExploitedEPSS 5.79%

Last modified Jun 17, 2026

CVE-2025-24990 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 5.79% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

5.79%

92.2th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Nov 4, 2025.

Weakness Enumeration

CWE-822

Affected Software

Vendor	Product	Versions	Update
Microsoft	Windows 10 1507	< 10.0.10240.21161	—
Microsoft	Windows 10 1607	< 10.0.14393.8519	—
Microsoft	Windows 10 1809	< 10.0.17763.7919	—
Microsoft	Windows 10 21h2	< 10.0.19044.6456	—
Microsoft	Windows 10 22h2	< 10.0.19045.6456	—
Microsoft	Windows 11 22h2	< 10.0.22621.6060	—
Microsoft	Windows 11 23h2	<= 10.0.22631.6060	—
Microsoft	Windows 11 24h2	< 10.0.26100.6899	—
Microsoft	Windows 11 25h2	< 10.0.26200.6899	—
Microsoft	Windows Server 2008	All versions	Sp2
Microsoft	Windows Server 2008	r2	Sp1
Microsoft	Windows Server 2012	All versions	—
Microsoft	Windows Server 2012	r2	—
Microsoft	Windows Server 2016	<= 10.0.14393.8519	—
Microsoft	Windows Server 2019	< 10.0.17763.7919	—
Microsoft	Windows Server 2022	< 10.0.20348.4294	—
Microsoft	Windows Server 2022 23h2	< 10.0.25398.1913	—
Microsoft	Windows Server 2025	<= 10.0.26100.6899	—

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24990Vendor Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-24990-detection-script-elevation-of-privilege-vulnerability-in-agere-modem-driver-affecting-windowsThird Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-24990-mitigation-script-elevation-of-privilege-vulnerability-in-agere-modem-driver-affecting-windowsMitigation, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24990US Government Resource

Timeline

Published: Oct 14, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-24990?

How severe is CVE-2025-24990?

CVE-2025-24990 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 5.79% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2025-24990?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-24990?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST