Auth bypass in Mitel Mivoice Mx-One
CVE-2025-67822
A vulnerability in the Provisioning Manager component of Mitel MiVoice MX-ONE 7.3 (7.3.0.0.50) through 7.8 SP1 (7.8.1.0.14) could allow an unauthenticated attacker to conduct an authentication bypass attack due to improper authentication mechanisms. A successful exploit could allow an attacker to gain unauthorized access to user or admin accounts in the system.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Mitel Mivoice Mx-One — versions 7.8
Weakness classification (CWE)
References
- www.mitel.com/support/security-advisories (Vendor Advisory)
- www.mitel.com/support/security-advisories/mitel-product-security-advisory-misa-… (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-67822?
- CVE-2025-67822 is a critical-severity vulnerability in Mitel Mivoice Mx-One, classified under Improper Authentication. CVSS score: 9.4/10. Published 2026-01-15.
- How severe is CVE-2025-67822?
- Critical severity. CVSS v3 base score is 9.4 out of 10.