vulnerability
Mitel MiCollab: CVE-2022-26143: Missing Authentication for Critical Function
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:L/Au:N/C:P/I:P/A:C) | Mar 9, 2022 | Jul 17, 2025 | Jul 18, 2025 |
Severity
9
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:C)
Published
Mar 9, 2022
Added
Jul 17, 2025
Modified
Jul 18, 2025
Description
The TP-240 (aka tp240dvr) component in Mitel MiCollab before 9.4 SP1 FP1 and MiVoice Business Express through 8.1 allows remote attackers to obtain sensitive information and cause a denial of service (performance degradation and excessive outbound traffic). This was exploited in the wild in February and March 2022 for the TP240PhoneHome DDoS attack.
Solution
mitel-micollab-upgrade-latest
References
- CVE-2022-26143
- https://attackerkb.com/topics/CVE-2022-26143
- URL-https://arstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-amplifying-traffic-by-a-factor-of-4-billion/
- URL-https://blog.cloudflare.com/cve-2022-26143/
- URL-https://news.ycombinator.com/item?id=30614073
- URL-https://team-cymru.com/blog/2022/03/08/record-breaking-ddos-potential-discovered-cve-2022-26143/
- URL-https://www.akamai.com/blog/security/phone-home-ddos-attack-vector
- URL-https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-22-0001
- URL-https://www.shadowserver.org/news/cve-2022-26143-tp240phonehome-reflection-amplification-ddos-attack-vector/
- CWE-306
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