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CVE-2025-21237 | Microsoft Windows up to Server 2025 Telephony Service heap-based overflow
A vulnerability classified as critical was found in Microsoft Windows. Affected by this vulnerability is an unknown functionality of the component Telephony Service. The manipulation leads to heap-based buffer overflow. This vulnerability is known as CVE-2025-21237. The attack can be launched remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.