Cybersecurity alert from the Canadian Centre for Cyber Security
Serial number: AV26-524
Date: May 28, 2026
On May 28, 2026, Mitel published a security advisory to address vulnerabilities in the following products:
- Mitel Standard Linux – versions 12.x and prior
- MiVoice 5000 – versions 8.x and prior
- MiVoice Border Gateway – versions 11.6.x, 12.x and prior
- MiVoice Business – versions 10.1.x to 10.5.x
- MiVoice Business Solution Virtual Instance – versions 2.x and prior
- MiVoice MX-ONE – versions 7.3 to 7.8 and version 8.x and prior
- OpenScape 4000 – versions V10 R1.x, V11 R0.22, V11 R1.26 and prior
- OpenScape Branch – versions V10.3 and V11.x and prior
- OpenScape SBC – versions V10.3 and V11.x and prior
- OpenScape Voice Server – versions V9R3 JITC, V10, V11 and prior
- MiCollab – versions 10.x and prior
- MiCloud Management Portal – versions 6.3.x and prior
- Mitel Open Integration Gateway – versions 4.3.x and prior
- Mitel Performance Analytics MPA – versions 3.6x and prior
- OpenScape Contact Media Service (used by Mitel CX and OpenScape Contact Center) – versions V12Rx and prior
- Mitel SIP DECT – versions 9.1, 9.2, 10.0, 10.1 and prior
- OpenScape Xpert Clients 6010P – versions V7, V8 and prior
The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates.
Courtesy of Canadian Centre for Cyber Security
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