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MeetingsApplication · Zoom

CVE-2023-22883

HIGH · 7.8 CVSS v3.1 Published 2023-03-16
Fix available
A fix is available. Upgrade to 5.13.5 or later.
See remediation →
80/100
Remediation priority · High
Zero-click

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
Zoom Client for IT Admin Windows installers before version 5.13.5 contain a local privilege escalation vulnerability. A local low-privileged user could exploit this vulnerability in an attack chain during the installation process to escalate their privileges to the SYSTEM user.

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

Zoom Client for IT Admin Windows installers before version 5.13.5 contain a local privilege escalation vulnerability. A local low-privileged user can exploit the installation process to gain SYSTEM-level privileges by manipulating installer behavior during the vulnerable version's setup, achieving full administrative control over the affected system.

MitigationUpdate Zoom Client for IT Admin Windows installers to version 5.13.5 or later. Organizations should redeploy the patched installer to replace any instances of vulnerable versions currently in use.

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:< 5.13.5

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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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. Locate Zoom installer files in the environment
    Search for 'ZoomInstaller*.exe', 'ZoomSetup*.exe', or 'zoom*.exe' in software distribution folders (e.g., \\server\share\software, C:\ProgramData\, SCCM repository, download folders). Right-click the file, select Properties, and view the Details tab for Version information.
    Affected if Any Zoom installer file found with version lower than 5.13.5
  2. Check installed Zoom Meetings version
    Open Control Panel > Programs and Features, or run 'Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* | Where-Object {$_.DisplayName -like "*Zoom*"} | Select-Object DisplayName, DisplayVersion', to find the installed Zoom version.
    Affected if Installed Zoom version is lower than 5.13.5 (note: this indicates an older installer was likely used)
  3. Check Windows event logs for Zoom installation events
    Open Event Viewer, navigate to Windows Logs > Application, and filter for events with Source 'MsiInstaller' containing 'Zoom'. Note the installer version in the event details if available.
    Affected if Installation event shows installer version lower than 5.13.5 or no version information with older Zoom installation date
  4. Inspect Zoom installer file version properties
    If a Zoom installer executable is found, right-click > Properties > Details tab. Look for 'File version' or 'Product version' fields. Compare numeric version against 5.13.5.
    Affected if File or product version listed is below 5.13.5 (e.g., 5.13.0, 5.12.0, etc.)

A system is affected if any Zoom installer with version below 5.13.5 was used to install Zoom, or if Zoom is currently installed from an older installer version.

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 5.13.5 or later
Fixed in 5.13.5
Interim mitigation

Update Zoom Client for IT Admin Windows installers to version 5.13.5 or later. Organizations should redeploy the patched installer to replace any instances of vulnerable versions currently in use.

Recommended fix High confidence

Zoom Client for IT Admin Windows version 5.13.5 or later

  1. Download the Zoom Client for IT Admin Windows installer version 5.13.5 or later from the official Zoom website (explore.zoom.us)
  2. Locally verify the installer file integrity using hash verification if provided by Zoom
  3. Close any running Zoom applications
  4. Uninstall the current Zoom Client for IT Admin version through Windows Control Panel > Programs and Features
  5. Run the Zoom installer with appropriate permissions
  6. Follow the on-screen installation prompts to complete the installation
  7. Restart the system if prompted by the installer
  8. Launch Zoom and verify the version number matches 5.13.5 or later via Help > About Zoom

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

Fix this in Meetings Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,040
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,664.

Scan for this in your stack

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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-2023-22883 in production — separate from our analysis above.

No notes yet

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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