CVE-2022-28758
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 · moderate confidenceZoom On-Premise Meeting Connector MMR before version 4.8.20220815.130 contains an improper access control vulnerability that allows unauthorized users to access audio and video feeds of meetings they were not authorized to join, potentially enabling meeting disruptions.
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
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
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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Identify if Zoom On-Premise Meeting Connector MMR is deployedCheck your on-premise infrastructure for installation of Zoom Meeting Connector MMR. This is typically installed on dedicated servers in your data center. Review your Zoom deployment documentation or consult your IT inventory for systems running this component.Affected if The system has Zoom On-Premise Meeting Connector MMR installed in the environment
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Locate the installed version of the MMR componentAccess the Zoom Meeting Connector MMR server via SSH or remote access. Run the Zoom connector version check command, typically found in the connector admin interface or via command line tools provided by Zoom. Check /opt/zoom or similar installation directories for version files.Affected if Unable to determine the installed version
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Compare installed version against the affected rangeCompare the discovered version number to the vulnerable range: versions before 4.8.20220815.130. The version format appears as major.minor.yyyymmdd.build (for example, 4.8.20220815.130).Affected if The installed version is lower than 4.8.20220815.130
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Verify current patch levelConfirm whether the latest Zoom On-Premise MMR patches have been applied. Check Zoom's release notes or contact Zoom support for the most recent available version for your deployment.Affected if The deployed version lags behind the current Zoom release for the MMR component
You are affected if Zoom On-Premise Meeting Connector MMR is installed and the installed version is below 4.8.20220815.130.
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 improper access control vulnerability.
4.8.20220815.130
- Download Zoom On-Premise Meeting Connector MMR version 4.8.20220815.130 or later from the official Zoom download portal
- Deploy the upgrade to all instances of the On-Premise Meeting Connector MMR in your environment
- Verify the upgrade was successful by checking the version number in the administration interface
- Test that meetings can be created and joined properly after the upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-28758 — 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-2022-28758 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