What’s Vulnerable › Vulnerabilities

CVE-2022-28761: Zoom On-Premise Deployments: Improper Access Control

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-10-14 · updated 2026-06-17
• Weakness: CWE-284

Description

Zoom On-Premise Meeting Connector MMR before version 4.8.20220916.131 contains an improper access control vulnerability. As a result, a malicious actor in a meeting or webinar they are authorized to join could prevent participants from receiving audio and video causing meeting disruptions.

Affected products

• Zoom Video Communications Inc Zoom On-Premise Meeting Connector MMR: before 4.8.20220916.131 — fixed in 4.8.20220916.131

How to fix

Upgrade to a fixed version: Zoom Video Communications Inc Zoom On-Premise Meeting Connector MMR 4.8.20220916.131. Check the vendor advisory for mitigations.

References

• https://explore.zoom.us/en/trust/security/security-bulletin/
• https://explore.zoom.us/en/trust/security/security-bulletin/

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