Is CVE-2021-34416 actively exploited?

No active exploitation of CVE-2021-34416 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-34416 be exploited remotely?

Yes. CVE-2021-34416 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-34416?

CVE-2021-34416 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-34416

CRITICAL

CVE-2021-34416

CWE-20Published: September 27, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-34416 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.