CVE-2022-28749Network attack vector

Unauthorized meeting entry via unchecked attendee permission

Published Jun 15, 2022 · Updated Sep 16, 2024

Improper authorization in Zoom Meeting Connector MMR before 4.8.113.20220526 allows remote authenticated users to enter a meeting from the waiting room. The MMR meeting-join authorization path fails to check the attendee permission that should gate the transition from the waiting room into the live meeting. Exploitation requires attendee access to the meeting's waiting room; success bypasses host consent and grants entry, with no further capability disclosed.

CVSS severity6.5
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Zoom Meeting Connector MMR before 4.8.113.20220526 allows remote authenticated users to enter a meeting from the waiting room. The MMR meeting-join authorization path fails to check the attendee permission that should gate the transition from the waiting room into the live meeting. Exploitation requires attendee access to the meeting's waiting room; success bypasses host consent and grants entry, with no further capability disclosed.

The record

CVE
CVE-2022-28749
Published
Jun 15, 2022
Updated
Sep 16, 2024
Vendor
Zoom Video Communications, Inc.
Product
Zoom Meeting Connector
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record 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 <4.8.113.20220526

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zoom Video Communications, Inc. · Zoom Meeting Connectorversion=unspecified <4.8.113.20220526

Published CVSS scores

4.3NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:S/C:N/I:P/A:N
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

T1190Exploit Public-Facing Application

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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