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CVE-2021-34417

Authenticated remote command execution with root privileges via web console in MMR

HIGH
7.2
CVSS Score
Published: November 11, 2021 at 11:00 PM UTC
Updated: June 17, 2026 at 03:55 AM UTC
10 products affected across 2 vendorsOn-Premise Meeting Connector MMROn-Premise Meeting Connector ControllerOn-Premise Recording Connector

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Severity
HIGH7.2
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

On-Premise Meeting Connector Controller· Zoom
95%
v < 4.6.365.20210703
Affected range stops below 4.6.365.20210703, so it looks safe — our inference, not a vendor statement
On-Premise Meeting Connector MMR· Zoom
95%
v < 4.6.365.20210703
Affected range stops below 4.6.365.20210703, so it looks safe — our inference, not a vendor statement
On-Premise Recording Connector· Zoom
95%
v < 3.8.45.20210703
Affected range stops below 3.8.45.20210703, so it looks safe — our inference, not a vendor statement
On-Premise Virtual Room Connector· Zoom
95%
v < 4.4.6868.20210703
Affected range stops below 4.4.6868.20210703, so it looks safe — our inference, not a vendor statement
On-Premise Virtual Room Connector Load Balancer· Zoom
95%
v < 2.5.5496.20210703
Affected range stops below 2.5.5496.20210703, so it looks safe — our inference, not a vendor statement
Zoom On-Premise Meeting Connector Controller· Zoom Video Communications
60%
v < 4.6.365.20210703
Affected range stops below 4.6.365.20210703, so it looks safe — our inference, not a vendor statement
Zoom On-Premise Meeting Connector MMR· Zoom Video Communications
60%
v < 4.6.365.20210703
Affected range stops below 4.6.365.20210703, so it looks safe — our inference, not a vendor statement
Zoom On-Premise Recording Connector· Zoom Video Communications
60%
v < 3.8.45.20210703
Affected range stops below 3.8.45.20210703, so it looks safe — our inference, not a vendor statement
Zoom On-Premise Virtual Room Connector· Zoom Video Communications
60%
v < 4.4.6868.20210703
Affected range stops below 4.4.6868.20210703, so it looks safe — our inference, not a vendor statement
Zoom On-Premise Virtual Room Connector Load Balancer· Zoom Video Communications
60%
v < 2.5.5496.20210703
Affected range stops below 2.5.5496.20210703, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://explore.zoom.us/en/trust/security/security-bulletin

CVSS

7.2HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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