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High severity · published Sep 27, 2021
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,…
7.5
CVSS
1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MC
Meeting Connector · Zoom
before 4.6.358.20210205 · source: NVD
Affected product
MC
Meeting Connector
Zoom
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-34415
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-34415
Vendor Advisory
https://explore.zoom.us/en/trust/security/security-bulletin/
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