How severe is CVE-2025-24990?

CVE-2025-24990 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-24990 being actively exploited?

Yes. CVE-2025-24990 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-10-14, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2025-24990?

CVE-2025-24990 primarily affects Microsoft Windows 10 1507. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-24990?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2025-24990 have an EU (EUVD) identifier?

Yes. CVE-2025-24990 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34257. It is also flagged as exploited in the EUVD (since 2025-10-14).

When was CVE-2025-24990 published?

CVE-2025-24990 was published on 2025-10-14 and last updated on 2026-06-17.

CVE-2025-24990

CVE-2025-24990 is a high-severity vulnerability in Microsoft Windows 10 1507 with a CVSS 3.x base score of 7.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2025-10-14). The underlying weakness is classified as CWE-822.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Yes — listed in CISA KEV (added 2025-10-14)
EU (EUVD) id: EUVD-2025-34257
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2025-10-14)
Weakness: CWE-822
Affected product: Microsoft Windows 10 1507
Published: 2025-10-14
Last modified: 2026-06-17

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.

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 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-24990 being actively exploited?: Yes. CVE-2025-24990 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-10-14, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2025-24990?: CVE-2025-24990 primarily affects Microsoft Windows 10 1507. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-24990?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2025-24990 have an EU (EUVD) identifier?: Yes. CVE-2025-24990 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34257. It is also flagged as exploited in the EUVD (since 2025-10-14).
When was CVE-2025-24990 published?: CVE-2025-24990 was published on 2025-10-14 and last updated on 2026-06-17.

References

Affected products (18)

cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

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