CVE-2025-21371

Summary

CVE-2025-21371 is a remote code execution vulnerability affecting the Windows Telephony Service. An attacker can exploit this vulnerability by sending maliciously crafted SIP INVITE messages to a targeted system. Successful exploitation allows the attacker to execute arbitrary code with system privileges, potentially leading to severe consequences including data theft or system compromise. Microsoft released a security update to address this vulnerability, and it is strongly recommended that affected systems be updated as soon as possible to mitigate the risk.

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