CVE-2022-28758Network attack vector

Unauthenticated access to meeting audio and video

Published Sep 16, 2022 · Updated Sep 17, 2024

Improper access control in Zoom On-Premise Meeting Connector MMR before 4.8.20220815.130 allows remote attackers to access meeting media. Zoom has not disclosed which MMR request or authorization check fails when an uninvited participant requests a meeting's audio or video feed. No credentials or user interaction are required; exposure includes confidential meeting audio and video plus limited meeting disruption.

CVSS severity8.2
High
EPSS probability0.69%
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 4.8.20220815.130 allows remote attackers to access meeting media. Zoom has not disclosed which MMR request or authorization check fails when an uninvited participant requests a meeting's audio or video feed. No credentials or user interaction are required; exposure includes confidential meeting audio and video plus limited meeting disruption.

The record

CVE
CVE-2022-28758
Published
Sep 16, 2022
Updated
Sep 17, 2024
Vendor
Zoom Video Communications, Inc.
Product
Zoom On-Premise Meeting Connector MMR
Classifications
CWE-284
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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 <4.8.20220815.130

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zoom Video Communications, Inc. · Zoom On-Premise Meeting Connector MMRversion=unspecified <4.8.20220815.130

Published CVSS scores

8.2Zoom Video Communications, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
8.2NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control

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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