CVE-2022-26143

The TP-240 (aka tp240dvr) component in Mitel MiCollab before 9.4 SP1 FP1 and MiVoice Business...

9.8 CriticalIn KEV

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

87.3%Up 86.1 points since Mar 10, 2022

What each source reports

NVD Score used 9.8

Record: CVE-2022-26143
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 9.0 HighAV:N/AC:L/Au:N/C:P/I:P/A:C
Weakness: CWE-306
Updated: 2026-11-02

CVE List 9.8

Record: CVE-2022-26143
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-306
Updated: 2026-11-02

EUVDEUVD-2022-30710 9.8

Record: EUVD-2022-30710
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-xh7f-2c8g-37p4 9.8

The TP-240 (aka tp240dvr) component in Mitel MiCollab before 9.4 SP1 FP1 and MiVoice Business...

Record: GHSA-xh7f-2c8g-37p4
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-306, CWE-863
Updated: 2026-11-02

CISA KEV No score

MiCollab, MiVoice Business Express Access Control Vulnerability

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.

Record: CVE-2022-26143
Weakness: CWE-306, CWE-406
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Nuclei	Mitel MiCollab - Information Disclosure & Denial of Service

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, CISA KEV, Nuclei, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-26143 is a critical vulnerability (CVSS 9.8) in Mitel Micollab, published March 9, 2022. CISA lists it as known to be exploited, since March 25, 2022. EUVD reports exploitation since March 25, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 87.3%, the 99th percentile. No source names a fixed version.

References

Show 4 moreShow less