CVE-2022-41326Network attack vector

Remote code execution via unauthorized script upload

Published Nov 22, 2022 · Updated Apr 29, 2025

Missing authorization in Mitel MiCollab 9.6.0.105 and earlier allows remote attackers to execute code through web conferencing. The web conferencing component accepts arbitrary script uploads without enforcing authorization, then executes the uploaded code in the application context. No authentication or user interaction is required, and MiVoice Business Express deployments containing earlier MiCollab releases are also exposed to application-context code execution.

CVSS severity9.8
Critical
EPSS probability1.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Mitel MiCollab 9.6.0.105 and earlier allows remote attackers to execute code through web conferencing. The web conferencing component accepts arbitrary script uploads without enforcing authorization, then executes the uploaded code in the application context. No authentication or user interaction is required, and MiVoice Business Express deployments containing earlier MiCollab releases are also exposed to application-context code execution.

The record

CVE
CVE-2022-41326
Published
Nov 22, 2022
Updated
Apr 29, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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