CVE-2022-26143
MiCollab, MiVoice Business Express Access Control Vulnerability
Mitel MiCollab, MiVoice Business ExpressFrameworks
CVSS
9.8CriticalExploit odds (EPSS)87.3%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
CISA required actionApply updates per vendor instructions. CISA KEV
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Timeline
Public exploit code and templates 1
- Scanner templateMitel MiCollab - Information Disclosure & Denial of ServiceNuclei
Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.
Description
A vulnerability has been identified in MiCollab and MiVoice Business Express that may allow a malicious actor to gain unauthorized access to sensitive information and services, cause performance degradations or a denial of service condition on the affected system.
Text from CVE List
Affected versions 1
- n/aaffected: n/aCVE List
References 9
- mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-22-0001Advisoryvia CVE List
- akamai.com/blog/security/phone-home-ddos-attack-vectorAdvisoryvia CVE List
- nvd.nist.gov/vuln/detail/CVE-2022-26143Referencevia CISA KEV
- shadowserver.org/news/cve-2022-26143-tp240phonehome-reflection-amplification-ddos-attack-vector/Referencevia CVE List
- news.ycombinator.com/item?id=30614073Referencevia CVE List
- blog.cloudflare.com/cve-2022-26143/Referencevia CVE List
- team-cymru.com/blog/2022/03/08/record-breaking-ddos-potential-discovered-cve-2022-26143/Referencevia CVE List
- arstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-amplifying-traffic-by-a-factor-of-4-billion/Referencevia CVE List
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26143Referencevia CVE List