CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2022-26143
Critical (9.8) in Mitel MiCollab, MiVoice Business Express. In CISA KEV since 2022-03-25. EPSS 87% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 87% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
- CISA KEV
- listed 2022-03-25, due 2022-04-15
- CWE
- CWE-306
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mitel:micollab
- mitel:mivoice_business_express
References
- https://arstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-amplifying-traffic-by-a-factor-of-4-billion/
- 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-2022-26143/
- https://www.akamai.com/blog/security/phone-home-ddos-attack-vector