dbcve.org
MeetingsApplication · Zoom

CVE-2022-28766

HIGH · 7.3 CVSS v3.1 Published 2022-11-17
Fix available
A fix is available. Upgrade to 5.12.6 or later.
See remediation →
73/100
Remediation priority · Elevated

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Windows 32-bit versions of the Zoom Client for Meetings before 5.12.6 and Zoom Rooms for Conference Room before version 5.12.6 are susceptible to a DLL injection vulnerability. A local low-privileged user could exploit this vulnerability to run arbitrary code in the context of the Zoom client.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

This is a DLL injection vulnerability in Windows 32-bit versions of Zoom Client for Meetings and Zoom Rooms prior to version 5.12.6. A local low-privileged user can exploit this to inject and execute arbitrary code within the context of the Zoom client process, effectively achieving local privilege escalation.

MitigationUpgrade Zoom Client for Meetings and Zoom Rooms to version 5.12.6 or later on all affected Windows 32-bit installations.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
MeetingsApplication
Affected:< 5.12.6
RoomsApplication
Affected:< 5.12.6

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Verify Windows architecture is 32-bit
    Open Command Prompt and run 'systeminfo | findstr /C:"System Type"'. If it shows "x86" or "32-bit", the system is 32-bit Windows. If it shows "x64" or "64-bit", the system is 64-bit and NOT affected by this specific vulnerability.
    Affected if System is Windows 32-bit (x86)
  2. Check Zoom Meetings version
    Navigate to the Zoom installation directory (typically C:\Users\<username>\AppData\Roaming\Zoom\bin or C:\Program Files\Zoom\bin) and locate Zoom.exe. Right-click Zoom.exe, select Properties, and check the File Version on the Details tab. Alternatively, open PowerShell and run: (Get-Item 'C:\Program Files\Zoom\bin\Zoom.exe').VersionInfo.FileVersion
    Affected if Zoom Meetings version is installed and the version number is less than 5.12.6
  3. Check Zoom Rooms version
    Navigate to the Zoom Rooms installation directory (typically C:\Program Files\Zoom Rooms) and locate ZoomRooms.exe. Right-click ZoomRooms.exe, select Properties, and check the File Version on the Details tab. Alternatively, open PowerShell and run: (Get-Item 'C:\Program Files\Zoom Rooms\ZoomRooms.exe').VersionInfo.FileVersion
    Affected if Zoom Rooms version is installed and the version number is less than 5.12.6
  4. Confirm active Zoom process (exploitation context)
    Open Task Manager or run 'tasklist | findstr -i zoom' in Command Prompt to see if Zoom.exe or ZoomRooms.exe is currently running. The vulnerability requires the Zoom process to be active for DLL injection to occur.
    Affected if A Zoom process (Zoom.exe or ZoomRooms.exe) is running on a 32-bit Windows system with a vulnerable version

A system is affected if it is running Windows 32-bit (x86) with Zoom Client for Meetings or Zoom Rooms version less than 5.12.6 installed, and the vulnerable Zoom process is active.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 5.12.6 or later
Fixed in 5.12.6
Interim mitigation

Upgrade Zoom Client for Meetings and Zoom Rooms to version 5.12.6 or later on all affected Windows 32-bit installations.

Recommended fix High confidence

Zoom Client for Meetings 5.12.6 or later / Zoom Rooms 5.12.6 or later

  1. 1. Open Zoom Client for Meetings or Zoom Rooms application
  2. 2. Click on your profile picture or initials in the top-right corner
  3. 3. Select 'Check for Updates' to see the current version
  4. 4. If an update is available, click 'Update' to download and install version 5.12.6 or later
  5. 5. Alternatively, download the latest version directly from https://explore.zoom.us/en/download/ or https://explore.zoom.us/en/docs/zoom-rooms/
  6. 6. Restart the Zoom application after the update completes
  7. 7. Verify the installed version is 5.12.6 or higher
Caveat Review Zoom release notes for any changes to meeting features or room controller compatibility in version 5.12.6

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Meetings Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-28766 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data