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The vulnerabilities can be exploited to make unauthorized VoIP calls, spoof caller IDs, deny voice calls, and even execute malicious code on users' devices.
A team of academics has found eight vulnerabilities in the Android operating system's VoIP components. These vulnerabilities can be exploited to make unauthorized VoIP calls, spoof caller IDs, deny voice calls, and even execute malicious code on users' devices.
The research is the first of its kind. Until now, security researchers and academics have only looked at the security features of Voice-over-IP (VoIP) equipment, servers, and VoIP mobile apps, but none have analyzed the VoIP components inside Android itself.
 
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