VULNERABILITY INTELLIGENCE
CVE-2021-34418
CVSS score4 MEDIUM
EPSS probability0.63%
CISA KEVNot currently listed
Published2021-11-11
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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.
Weakness classification
- nvd@nist.gov: CWE-476
Primary references
- security@zoom.us — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory