CVE-2022-26143

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    CVE-2022-26143

    Published: 10 Mar 2022Last Modified: 11 Mar 2026

    Summary:

    Details: 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.

    References: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26143, , 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, https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-22-0001, https://www.shadowserver.org/news/cve-2022-26143-tp240phonehome-reflection-amplification-ddos-attack-vector/, https://blog.cloudflare.com/cve-2022-26143/, https://news.ycombinator.com/item?id=30614073, https://arstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-amplifying-traffic-by-a-factor-of-4-billion/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2022-26143 | CVE-DB