CVE-2021-34417

highpriority · track · 29EPSS 0.012 · 69 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.24% (69th) EPSS

CVSS 9 · high

Is it mine?

15 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

9.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.6–9.1

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8 · impact 10

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.2 · impact 5.9

v3.19.1criticalAV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.9highCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Nsecondary · ENISA EU

v3.17.9highCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Nsecondary · security@zoom.usexploitability 1.5 · impact 5.8

v3.16.6mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20US

affected products (15)

Products and version ranges known to be affected.

Zoom Video Communications Inc Zoom On-Premise Meeting Connector Controllerunspecified → 4.6.365.20210703enisa_euvdEU
Zoom Video Communications Inc Zoom On-Premise Meeting Connector MMRunspecified → 4.6.365.20210703enisa_euvdEU
Zoom Video Communications Inc Zoom On-Premise Recording Connectorunspecified → 3.8.45.20210703enisa_euvdEU
Zoom Video Communications Inc Zoom On-Premise Virtual Room Connectorunspecified → 4.4.6868.20210703enisa_euvdEU
Zoom Video Communications Inc Zoom On-Premise Virtual Room Connector Load Balancerunspecified → 2.5.5496.20210703enisa_euvdEU
Zoom Video Communications, Inc. Zoom≤ 4.6.365.20210703fstec_bduRU
Zoom Video Communications, Inc. Zoom≤ 3.8.45.20210703fstec_bduRU
Zoom Video Communications, Inc. Zoom On-Premise Meeting Connector MMR≤ 4.6.365.20210703fstec_bduRU
Zoom Video Communications, Inc. Zoom On-Premise Virtual Room Connector≤ 4.4.6868.20210703fstec_bduRU
Zoom Video Communications, Inc. Zoom On-Premise Virtual Room Connector Load Balancer≤ 2.5.5496.20210703fstec_bduRU
zoom zoom on-premise meeting connector controller< 4.6.365.20210703nvdUScpe:2.3:a:zoom:zoom_on-premise_meeting_connector_controller:*:*:*:*:*:*:*:*
zoom zoom on-premise meeting connector mmr< 4.6.365.20210703nvdUScpe:2.3:a:zoom:zoom_on-premise_meeting_connector_mmr:*:*:*:*:*:*:*:*
zoom zoom on-premise recording connector< 3.8.45.20210703nvdUScpe:2.3:a:zoom:zoom_on-premise_recording_connector:*:*:*:*:*:*:*:*
zoom zoom on-premise virtual room connector< 4.4.6868.20210703nvdUScpe:2.3:a:zoom:zoom_on-premise_virtual_room_connector:*:*:*:*:*:*:*:*
zoom zoom on-premise virtual room connector load balancer< 2.5.5496.20210703nvdUScpe:2.3:a:zoom:zoom_on-premise_virtual_room_connector_load_balancer:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-11-11modified 2026-06-17

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references (5)

External citations — patches, advisories, analysis.

scry

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