CVE-2025-21190

Summary

CVE-2025-21190 is a remote code execution vulnerability affecting the Windows Telephony Service. Successful exploitation allows an attacker to execute arbitrary code on the targeted system. The vulnerability stems from improper input validation in the service, allowing maliciously crafted telephony messages to trigger the code injection. This issue can lead to significant security risks as an attacker could install malware, steal sensitive data, or gain unauthorized system access. Microsoft has released a patch to address this vulnerability; it is highly recommended that users apply the update as soon as possible.

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