CVE-2022-28759
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 · uneditedZoom On-Premise Meeting Connector MMR before version 4.8.20220815.130 contains an improper access control vulnerability. As a result, a malicious actor could obtain the audio and video feed of a meeting they were not authorized to join and cause other meeting disruptions.
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 confidenceImproper access control vulnerability in Zoom On-Premise Meeting Connector MMR allows unauthorized users to access meeting audio/video feeds they are not authorized to join, potentially exposing sensitive meeting content.
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< 4.8.20220815.130CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
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 checksWork through these to decide whether this CVE applies to you.
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Verify Zoom On-Premise Meeting Connector MMR is installedCheck system packages or installed software list for 'Zoom On Premise Meeting Connector MMR' or related MMR componentsAffected if The product is not present on the system (not affected)
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Determine installed MMR versionRun command to retrieve MMR version: rpm -qa | grep -i zoom or check installed package version through system package managerAffected if Version number returned is lower than 4.8.20220815.130
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Check MMR service statusRun systemctl status zoom-mmr or check if MMR-related processes/services are runningAffected if MMR service is active and version is below 4.8.20220815.130
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Verify MMR configuration is in useInspect configuration files in /opt/zoom or MMR configuration directories to confirm the Meeting Connector MMR component is enabledAffected if MMR is enabled in configuration and version is below the fixed release
A system is affected only if Zoom On-Premise Meeting Connector MMR is installed and running with a version lower than 4.8.20220815.130, as only those versions contain the improper access control flaw.
Generated from the published advisory. Verify against your own configuration.
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 · scoped4.8.20220815.130
Upgrade Zoom On-Premise Meeting Connector MMR to version 4.8.20220815.130 or later to remediate the access control flaw.
4.8.20220815.130 or later
- 1. Identify the current version of Zoom On-Premise Meeting Connector MMR by checking the system administration interface or running the version check command
- 2. Download the fixed version (4.8.20220815.130 or later) from the official Zoom repository (explore.zoom.us)
- 3. Review the upgrade documentation provided by Zoom for the Meeting Connector MMR
- 4. Schedule a maintenance window as upgrades may require brief service interruption
- 5. Back up current configuration settings before proceeding
- 6. Apply the upgrade following Zoom's standard upgrade procedure for On-Premise Meeting Connector components
- 7. Verify the new version is installed correctly after upgrade completes
- 8. Test that authorized meeting joins work properly and unauthorized access is prevented
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,888.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-28759 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-28759 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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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.
- 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