January 7, 2025 · Applied Cybernetics Group
CVE-2024-55550 — Mitel MiCollab
known ransomware use
Mitel MiCollab Path Traversal Vulnerability
- Added to KEV
2025-01-07- Federal due date
2025-01-28- Vendor
- Mitel
- Product
- MiCollab
- EPSS
- 98.4th percentile (score 0.381, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- ATT&CK
- T1005 , T1041 , T1190 · signal rollup
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2024-55550
CISA short description
Mitel MiCollab contains a path traversal vulnerability that could allow an authenticated attacker with administrative privileges to read local files within the system due to insufficient input sanitization. This vulnerability can be chained with CVE-2024-41713, which allows an unauthenticated, remote attacker to read arbitrary files on the server.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.