CVE-2021-34416

Name: CVE-2021-34416
Creator: NVD / NIST
Published: 2021-09-27T14:15:08.44+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.60%

Last modified Jun 17, 2026

CVE-2021-34416 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The network address administrative settings web portal for the Zoom on-premise Meeting Connector before version 4.6.360.20210325, Zoom on-premise Meeting Connector MMR before version 4.6.360.20210325, Zoom on-premise Recording Connector before version 3.8.44.20210326, Zoom on-premise Virtual Room Connector before version 4.4.6752.20210326, and Zoom on-premise Virtual Room Connector Load Balancer before version 2.5.5495.20210326 fails to validate input sent in requests to update the network configuration, which could lead to remote command injection on the on-premise image by the web portal administrators.. EPSS estimates a 1.60% chance of exploitation in the next 30 days.

Description

The network address administrative settings web portal for the Zoom on-premise Meeting Connector before version 4.6.360.20210325, Zoom on-premise Meeting Connector MMR before version 4.6.360.20210325, Zoom on-premise Recording Connector before version 3.8.44.20210326, Zoom on-premise Virtual Room Connector before version 4.4.6752.20210326, and Zoom on-premise Virtual Room Connector Load Balancer before version 2.5.5495.20210326 fails to validate input sent in requests to update the network configuration, which could lead to remote command injection on the on-premise image by the web portal administrators.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.60%

72.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Zoom	Meeting Connector	< 4.6.360.20210325
Zoom	Recording Connector	< 3.8.44.20210326
Zoom	Virtual Room Connector	< 4.4.6752.20210326
Zoom	Virtual Room Connector Load Balancer	< 2.5.5495.20210326

References

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

Timeline

Published: Sep 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34416?

How severe is CVE-2021-34416?

CVE-2021-34416 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.60% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34416?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34416?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST