Mitel is a organization tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed January 5, 2026; most recent activity January 5, 2026.
Mitel is a global provider of business communications technology, including IP telephony, unified communications, and contact center platforms (notably Mitel MiVoice). Its products are widely deployed in enterprises, making vulnerabilities in Mitel UC/telecom solutions a notable cybersecurity concern since exploited weaknesses can enable remote access, service disruption, or data exposure. The relevance to threat intelligence is that rising exploitation trends (as seen in CISA’s Known Exploited Vulnerabilities program) increase risk for Mitel customers and partners.
In 2025, the number of known exploited vulnerabilities in CISA's KEV catalog increased by 20%, with 245 new vulnerabilities added. However, research from Miggo Security indicates that the catalog may only represent 12%…