After proof-of-concept technical details were published on 5 December 2024 for CVE-2024-41713 and CVE-2024-55550, exploitation activity chaining these two Mitel MiCollab vulnerabilities has been reported.
MiCollab is a cloud-based platform that integrates chat, voice, video, and SMS messaging for teams. Vulnerability details CVE-2024-41713 is a vulnerability in the NuPoint Unified Messaging (NPM) component of Mitel MiCollab and has a CVSSv3 score of 9.8.
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Source: NHS Digital
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