CVE-2025-21417
vulnerability analysis and mitigation

Overview

Windows Telephony Service Remote Code Execution Vulnerability (CVE-2025-21417) is a security flaw discovered and disclosed on January 14, 2025. The vulnerability affects multiple versions of Microsoft Windows operating systems, including Windows 10, Windows 11, and various Windows Server editions (NVD).

Technical details

The vulnerability has been assigned a CVSS v3.1 base score of 8.8 (HIGH) with the following vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Microsoft has classified this as a heap-based buffer overflow vulnerability (CWE-122) (NVD).

Impact

This vulnerability could allow an attacker to execute remote code on affected systems, potentially gaining high levels of access to confidentiality, integrity, and availability of the target system, as indicated by the CVSS scoring (NVD).

Mitigation and workarounds

Microsoft has released security updates to address this vulnerability across multiple affected versions. Updates are available for Windows 10 (versions 1507 through 22H2), Windows 11 (versions 22H2 through 24H2), and Windows Server versions (2008 through 2025) (Rapid7).

Additional resources


SourceThis report was generated using AI

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