CVE-2022-26143 Mitel MiCollab, MiVoice Business Express: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Apr 15, 2022
What to do
- Install Mitel's security update for MiCollab, MiVoice Business Express. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
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: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- MiCollab, MiVoice Business Express Access Control Vulnerability
- Product
- Mitel MiCollab, MiVoice Business Express
- CISA description
- A vulnerability has been identified in MiCollab and MiVoice Business Express that may allow a malicious actor to gain unauthorized access to sensitive information and services, cause performance degradations or a denial of service condition on the affected system.
- Type of flaw
- Login or permission bypass (CWE-306, CWE-406)
- Confirmed exploited
- Mar 25, 2022
- US federal patch deadline
- Apr 15, 2022
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Answering about CVE-2022-26143 ·
Questions about CVE-2022-26143
Is CVE-2022-26143 being exploited?
Yes. CISA added CVE-2022-26143 to its Known Exploited Vulnerabilities catalog on Mar 25, 2022, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2022-26143?
Install Mitel's security update for MiCollab, MiVoice Business Express. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2022-26143?
Only if you use Mitel MiCollab, MiVoice Business Express. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.