CVE-2022-26143
KEVCRITICAL 9.8EPSS 87.3%
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.
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 9.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:C - EPSS
- 87.33% chance of exploitation in the next 30 days, 100th percentile
- CISA KEV
- added 2022-03-25
- Nuclei
- critical · CWE-306
- Published
- 2022-03-09
- Updated
- 2025-10-21
Nuclei templates (1)
Security advisories
- https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-2…
- https://arstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-…
- https://blog.cloudflare.com/cve-2022-26143
- https://news.ycombinator.com/item?id=30614073
- https://team-cymru.com/blog/2022/03/08/record-breaking-ddos-potential-discovered-cve-2022…
- https://www.akamai.com/blog/security/phone-home-ddos-attack-vector
- https://www.shadowserver.org/news/cve-2022-26143-tp240phonehome-reflection-amplification-…