AEGLIX vulnerability intelligence
CVE-2022-26143
CRITICAL · CVSS 9.8 · Analyzed
Published: 2022-03-10 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
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 and scoring
- CVSS score
- 9.8 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-306
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Mitel · MiCollab, MiVoice Business Express
- Added to catalog
- 2022-03-25
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2022-04-15
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:mitel:micollab:*:*:*:*:*:-:*:*
Before (exclusive): 9.4
cpe:2.3:a:mitel:micollab:9.4:-:*:*:*:-:*:*
cpe:2.3:a:mitel:micollab:9.4:sp1:*:*:*:-:*:*
cpe:2.3:a:mitel:mivoice_business_express:*:*:*:*:*:*:*:*
Through (inclusive): 8.1
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://arstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-amplifying-traffic-by-a-factor-of-4-billion/
Exploit · Press/Media Coverage · Third Party Advisory
- https://blog.cloudflare.com/cve-2022-26143/
Mitigation · Third Party Advisory
- https://news.ycombinator.com/item?id=30614073
Issue Tracking · Third Party Advisory
- https://team-cymru.com/blog/2022/03/08/record-breaking-ddos-potential-discovered-cve-2022-26143/
Broken Link · Mitigation · Third Party Advisory
- https://www.akamai.com/blog/security/phone-home-ddos-attack-vector
Mitigation · Third Party Advisory
- https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-22-0001
Vendor Advisory
- https://www.shadowserver.org/news/cve-2022-26143-tp240phonehome-reflection-amplification-ddos-attack-vector/
Mitigation · Third Party Advisory
- https://arstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-amplifying-traffic-by-a-factor-of-4-billion/
Exploit · Press/Media Coverage · Third Party Advisory
- https://blog.cloudflare.com/cve-2022-26143/
Mitigation · Third Party Advisory
- https://news.ycombinator.com/item?id=30614073
Issue Tracking · Third Party Advisory
- https://team-cymru.com/blog/2022/03/08/record-breaking-ddos-potential-discovered-cve-2022-26143/
Broken Link · Mitigation · Third Party Advisory
- https://www.akamai.com/blog/security/phone-home-ddos-attack-vector
Mitigation · Third Party Advisory
- https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-22-0001
Vendor Advisory
- https://www.shadowserver.org/news/cve-2022-26143-tp240phonehome-reflection-amplification-ddos-attack-vector/
Mitigation · Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26143
US Government Resource