CVE-2024-55550 Mitel MiCollab: file path flaw
In plain words: The program can be tricked into reading or writing files outside the folder it should stay in. Leaks files such as passwords and settings, or overwrites important ones.
Confirmed exploited by CISA on · US federal patch deadline Jan 28, 2025
What to do
- Install Mitel's security update for MiCollab. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Patch edge devices first — attackers often start scanning for them within hours of a fix.
- Never expose the device's admin page to the internet.
- After patching a device that was exposed, follow the vendor's compromise checks, end active sessions and change passwords.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: They face the internet and guard the whole network, so a flaw here can hand attackers a way in — and these devices usually run no antivirus, so break-ins go unnoticed.
The details
- Official name
- Mitel MiCollab Path Traversal Vulnerability
- Product
- Mitel MiCollab
- CISA 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.
- Type of flaw
- File path flaw (CWE-22)
- Confirmed exploited
- Jan 7, 2025 — known to be used in ransomware attacks
- US federal patch deadline
- Jan 28, 2025
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Answering about CVE-2024-55550 ·
Questions about CVE-2024-55550
Is CVE-2024-55550 being exploited?
Yes. CISA added CVE-2024-55550 to its Known Exploited Vulnerabilities catalog on Jan 7, 2025, which means there is reliable evidence of real-world attacks, including by ransomware groups.
How do I fix CVE-2024-55550?
Install Mitel's security update for MiCollab. If no update exists, follow the vendor's workaround or stop using the product until one ships. Patch edge devices first — attackers often start scanning for them within hours of a fix.
Am I affected by CVE-2024-55550?
Only if you use Mitel MiCollab. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.