CVE-2022-28761Network attack vector

Meeting media interruption by authorized participants

Published Oct 14, 2022 · Updated May 14, 2025

Improper access control in Zoom On-Premise Meeting Connector MMR before 4.8.20220916.131 allows remote authenticated users to disrupt media. Zoom has not published the faulty access-control locus or the operation that accepts an authorized participant’s disruptive action. Access requires joining a meeting or webinar, and exploitation prevents participants from receiving audio and video without a reported host compromise.

CVSS severity6.5
Medium
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Zoom On-Premise Meeting Connector MMR before 4.8.20220916.131 allows remote authenticated users to disrupt media. Zoom has not published the faulty access-control locus or the operation that accepts an authorized participant’s disruptive action. Access requires joining a meeting or webinar, and exploitation prevents participants from receiving audio and video without a reported host compromise.

The record

CVE
CVE-2022-28761
Published
Oct 14, 2022
Updated
May 14, 2025
Vendor
Zoom Video Communications, Inc.
Product
Zoom On-Premise Meeting Connector MMR
Classifications
CWE-284, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 14, 2022CVE publishedPublication date reported by the CVE source.
  2. May 14, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <4.8.20220916.131

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zoom Video Communications, Inc. · Zoom On-Premise Meeting Connector MMRversion=unspecified <4.8.20220916.131

Published CVSS scores

6.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5Zoom Video Communications, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1499.004Application or System Exploitation

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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