CVE-2025-24990: Microsoft Is Aware of Vulnerabilities
Source GCVE Database
Exploited in the wild · KEV due 4 Nov 2025 · public exploit available : apply the vendor's fix or mitigations to affected systems now.
Data as of 13 Nov 2026, 19:41 UTC
- KEV deadline
- US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:CExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 14 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: evidence found.
Listed in CISA KEV the same day as disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by Microsoft Corporation
, 257 days before disclosure
CVE published
on cve.org
, t = 0
In Threat Radar
record ingested
, 17 minutes after disclosure
Added to CISA KEV (opens in a new tab)
exploitation confirmed
, the same day as disclosure
KEV remediation due
US federal deadline
, 21 days after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
AI-suggested
Microsoft has remediated this vulnerability by removing the vulnerable driver in the October cumulative update. Users should apply this update to eliminate the security risk. Additionally, Microsoft recommends removing any dependencies on the affected fax modem hardware, as it will no longer be supported or functional on Windows.
Description
Microsoft has announced the removal of the third-party Agere Modem driver (ltmdm64.sys) due to vulnerabilities. This driver shipped natively with supported Windows operating systems and has been removed in the October cumulative update. Fax modem hardware dependent on this driver will no longer function on Windows. Microsoft recommends removing dependencies on this hardware.
References
- nvd.nist.gov/vuln/detail/CVE-2025-24990 (opens in a new tab)
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24990 (opens in a new tab)
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24990 (opens in a new tab)
- vicarius.io/vsociety/posts/cve-2025-24990-detection-script-elevation-of-privilege-vulnerability-in-agere-modem-driver-affecting-windows (opens in a new tab)
- vicarius.io/vsociety/posts/cve-2025-24990-mitigation-script-elevation-of-privilege-vulnerability-in-agere-modem-driver-affecting-windows (opens in a new tab)