CVE-2025-21371
vulnerability analysis and mitigation

Overview

A Windows Telephony Service Remote Code Execution Vulnerability identified as CVE-2025-21371 was disclosed on February 11, 2025. This vulnerability affects various versions of Microsoft Windows operating systems (CVE Details).

Technical details

The vulnerability has been assigned a CVSS score of 9.0, indicating a critical severity level with network attack vector, medium attack complexity, and no authentication required (AV:N/AC:M/Au:N/C:C/I:C/A:C) (Rapid7).

Impact

This vulnerability could allow remote code execution through the Windows Telephony Service, potentially giving attackers complete control over affected systems with the ability to compromise confidentiality, integrity, and availability (Rapid7).

Mitigation and workarounds

Microsoft has released security updates to address this vulnerability across multiple Windows versions including Windows 10, Windows 11, Windows Server 2012, 2016, 2019, 2022, and 2025. The patches are available through various KB updates including KB5051974, KB5051979, KB5051980, KB5051987, KB5051989, KB5052000, KB5052006, KB5052020, KB5052040, and KB5052042 (Rapid7).

Additional resources


SourceThis report was generated using AI

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