CVE-2022-26143

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.873 · 100 %ileEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV

Likely / severe?

87.3% (100th) EPSS

CVSS 9 · high

Is it mine?

6 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2022-03-25remediate by 2022-04-15

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-22

MiCollab, MiVoice Business Express Access Control Vulnerability

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.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9–9.8

v2.09highAV:N/AC:L/Au:N/C:P/I:P/A:Cprimary · NVD / NIST USexploitability 10 · impact 8.5

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.4criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-306USprimaryCWE-20US

affected products (6)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Mitel Networks Corp. MiVoice Business Express≤ 8.1fstec_bduRU
Mitel Networks Corp. Mitel MiCollab≤ 9.4 SP1 FP1fstec_bduRU
mitel micollab< 9.4nvdUScpe:2.3:a:mitel:micollab:*:*:*:*:*:*:*:*
mitel micollab= 9.4nvdUScpe:2.3:a:mitel:micollab:*:*:*:*:*:*:*:*
mitel mivoice business express≤ 8.1nvdUScpe:2.3:a:mitel:mivoice_business_express:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2022-03-10modified 2026-06-17

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references (23)

External citations — patches, advisories, analysis.

scry

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