Critical severity9.8CISA KEVNVD Advisory· Published Mar 10, 2022· Updated Jun 17, 2026
CVE-2022-26143
CVE-2022-26143
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
8cpe:2.3:a:mitel:mivoice_business_express:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:mitel:mivoice_business_express:*:*:*:*:*:*:*:*range: <=8.1
- (no CPE)range: <=8.1
Patches
Vulnerability mechanics
References
8- arstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-amplifying-traffic-by-a-factor-of-4-billion/nvdExploitPress/Media CoverageThird Party Advisory
- blog.cloudflare.com/cve-2022-26143/nvdMitigationThird Party Advisory
- news.ycombinator.com/itemnvdIssue TrackingThird Party Advisory
- team-cymru.com/blog/2022/03/08/record-breaking-ddos-potential-discovered-cve-2022-26143/nvdBroken LinkMitigationThird Party Advisory
- www.akamai.com/blog/security/phone-home-ddos-attack-vectornvdMitigationThird Party Advisory
- www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-22-0001nvdVendor Advisory
- www.shadowserver.org/news/cve-2022-26143-tp240phonehome-reflection-amplification-ddos-attack-vector/nvdMitigationThird Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
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