{"id":"CVE-2025-24990","aliases":["EUVD-2025-34257","GHSA-9g9x-fc99-93r6"],"status":"published","title":"Windows Agere Modem Driver Elevation of Privilege Vulnerability","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.\nFax modem hardware dependent on this specific driver will no longer work on Windows.\nMicrosoft recommends removing any existing dependencies on this hardware.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.07948,"percentile":0.94819,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-822"],"published":"2025-10-14T17:00:10Z","modified":"2026-06-17T08:59:56Z","kev":{"date_added":"2025-10-14","due_date":"2025-11-04","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.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2025-10-14"},{"source":"kev","since":"2025-10-14"}],"exploits":[{"source":"pocgithub","id":"moiz-2x/CVE-2025-24990_POC","title":"moiz-2x/CVE-2025-24990_POC","date":"2025-10-16","url":"https://github.com/moiz-2x/CVE-2025-24990_POC"}],"products":[{"vendor":"microsoft","product":"windows"},{"vendor":"microsoft","product":"windows 10 version 1507"},{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1"},{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1 (server core installation)"},{"vendor":"microsoft","product":"windows server 2008 service pack 2"},{"vendor":"microsoft","product":"windows server 2008 service pack 2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2022, 23h2 edition (server core installation)"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_10_1507"},{"vendor":"microsoft","product":"windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_server_2008"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2022_23h2"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24990","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24990","tags":["government-resource","US Government Resource"]},{"url":"https://www.vicarius.io/vsociety/posts/cve-2025-24990-detection-script-elevation-of-privilege-vulnerability-in-agere-modem-driver-affecting-windows","tags":["Third Party Advisory"]},{"url":"https://www.vicarius.io/vsociety/posts/cve-2025-24990-mitigation-script-elevation-of-privilege-vulnerability-in-agere-modem-driver-affecting-windows","tags":["Mitigation","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-24990"},{"url":"https://github.com/advisories/GHSA-9g9x-fc99-93r6"}],"sources":{"cve":[{"id":"CVE-2025-24990","title":"Windows Agere Modem Driver Elevation of Privilege Vulnerability","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.\nFax modem hardware dependent on this specific driver will no longer work on Windows.\nMicrosoft recommends removing any existing dependencies on this hardware.","status":"published","published":"2025-10-14T17:00:10.973Z","modified":"2026-02-26T17:47:29.261Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-822"],"updated_at":"2026-11-02T14:32:44.11109Z"}],"euvd":[{"id":"EUVD-2025-34257","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.\nFax modem hardware dependent on this specific driver will no longer work on Windows.\nMicrosoft recommends removing any existing dependencies on this hardware.","status":"published","published":"2025-10-14T17:00:10Z","modified":"2026-02-26T17:47:29Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","level":"high"}],"exploited_since":"2025-10-14","updated_at":"2026-11-02T19:48:22.96585Z"}],"ghsa":[{"id":"GHSA-9g9x-fc99-93r6","title":"Microsoft is aware of vulnerabilities in the third party Agere Modem driver that ships natively...","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.\nFax modem hardware dependent on this specific driver will no longer work on Windows.\nMicrosoft recommends removing any existing dependencies on this hardware.","status":"published","published":"2025-10-14T18:30:28Z","modified":"2025-11-17T21:32:23Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-822"],"updated_at":"2026-11-02T15:04:50.769565Z"}],"kev":[{"id":"CVE-2025-24990","title":"Microsoft Windows Untrusted Pointer Dereference Vulnerability","description":"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.","cwes":["CWE-822"],"kev":{"date_added":"2025-10-14","due_date":"2025-11-04","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.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:15.999436Z"}],"nvd":[{"id":"CVE-2025-24990","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.\nFax modem hardware dependent on this specific driver will no longer work on Windows.\nMicrosoft recommends removing any existing dependencies on this hardware.","status":"published","published":"2025-10-14T17:15:39.193Z","modified":"2026-06-17T08:59:56.59Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-822"],"updated_at":"2026-11-02T14:11:38.17237Z"}]}}