CVE-2021-34417

Name: CVE-2021-34417
Creator: NVD / NIST
Published: 2021-11-11T23:15:09.283+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 1.24%

Last modified Jun 17, 2026

CVE-2021-34417 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. The network proxy page on the web portal for the Zoom On-Premise Meeting Connector Controller before version 4.6.365.20210703, Zoom On-Premise Meeting Connector MMR before version 4.6.365.20210703, Zoom On-Premise Recording Connector before version 3.8.45.20210703, Zoom On-Premise Virtual Room Connector before version 4.4.6868.20210703, and Zoom On-Premise Virtual Room Connector Load Balancer before version 2.5.5496.20210703 fails to validate input sent in requests to set the network proxy password. This could lead to remote command injection by a web portal administrator.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

Description

The network proxy page on the web portal for the Zoom On-Premise Meeting Connector Controller before version 4.6.365.20210703, Zoom On-Premise Meeting Connector MMR before version 4.6.365.20210703, Zoom On-Premise Recording Connector before version 3.8.45.20210703, Zoom On-Premise Virtual Room Connector before version 4.4.6868.20210703, and Zoom On-Premise Virtual Room Connector Load Balancer before version 2.5.5496.20210703 fails to validate input sent in requests to set the network proxy password. This could lead to remote command injection by a web portal administrator.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

1.24%

65.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Zoom	Zoom On-Premise Meeting Connector Controller	< 4.6.365.20210703
Zoom	Zoom On-Premise Meeting Connector Mmr	< 4.6.365.20210703
Zoom	Zoom On-Premise Recording Connector	< 3.8.45.20210703
Zoom	Zoom On-Premise Virtual Room Connector	< 4.4.6868.20210703
Zoom	Zoom On-Premise Virtual Room Connector Load Balancer	< 2.5.5496.20210703

References

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

Timeline

Published: Nov 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34417?

How severe is CVE-2021-34417?

CVE-2021-34417 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34417?

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-2021-34417?

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

Scan your code now

Source: NVD / NIST