Medium severity4.0NVD Advisory· Published Nov 11, 2021· Updated Jun 17, 2026
CVE-2021-34418
CVE-2021-34418
Description
The login routine of the web console in the Zoom On-Premise Meeting Connector before version 4.6.239.20200613, Zoom On-Premise Meeting Connector MMR before version 4.6.239.20200613, Zoom On-Premise Recording Connector before version 3.8.42.20200905, Zoom On-Premise Virtual Room Connector before version 4.4.6344.20200612, and Zoom On-Premise Virtual Room Connector Load Balancer before version 2.5.5492.20200616 fails to validate that a NULL byte was sent while authenticating. This could lead to a crash of the login service.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10- cpe:2.3:a:zoom:zoom_on-premise_meeting_connector_controller:*:*:*:*:*:*:*:*Range: <4.6.239.20200613
- cpe:2.3:a:zoom:zoom_on-premise_meeting_connector_mmr:*:*:*:*:*:*:*:*Range: <4.6.239.20200613
cpe:2.3:a:zoom:zoom_on-premise_recording_connector:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:zoom:zoom_on-premise_recording_connector:*:*:*:*:*:*:*:*range: <3.8.42.20200905
- (no CPE)range: <3.8.42.20200905
cpe:2.3:a:zoom:zoom_on-premise_virtual_room_connector:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:zoom:zoom_on-premise_virtual_room_connector:*:*:*:*:*:*:*:*range: <4.4.6344.20200612
- (no CPE)range: <4.4.6344.20200612
cpe:2.3:a:zoom:zoom_on-premise_virtual_room_connector_load_balancer:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:zoom:zoom_on-premise_virtual_room_connector_load_balancer:*:*:*:*:*:*:*:*range: <2.5.5492.20200616
- (no CPE)range: <2.5.5492.20200616
- (no CPE)range: unspecified
- Range: <4.6.239.20200613
Patches
Vulnerability mechanics
References
1- explore.zoom.us/en/trust/security/security-bulletinnvdVendor Advisory
News mentions
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