Resource exhaustion in Zoom Meeting Connector

CVE-2021-34415

The Zone Controller service in the Zoom On-Premise Meeting Connector Controller before version 4.6.358.20210205 does not verify the cnt field sent in incoming network packets, which leads to exhaustion of resources and system crash.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (60.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-34415: held from 0.010 to 0.010.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

  • Zoom Meeting Connector
  • Zoom On-Premise Meeting Connector Controller — versions The Zoom On-Premise Meeting Connector Controller before version 4.6.358.20210205

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-34415?
CVE-2021-34415 is a high-severity vulnerability in Zoom Meeting Connector, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2021-09-27.
How severe is CVE-2021-34415?
High severity. CVSS v3 base score is 7.5 out of 10.