Privilege escalation in Zoom Meetings

CVE-2021-34412

During the installation process for all versions of the Zoom Client for Meetings for Windows before 5.4.0, it is possible to launch Internet Explorer. If the installer was launched with elevated privileges such as by SCCM this can result in a local privilege escalation.

Vulnerability class: Privilege Escalation

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (22.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.3% 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-2021-34412: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

  • Zoom Meetings
  • Zoom Client For Meetings Windows — versions All versions of Zoom Client for Meetings for Windows before 5.4.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-34412?
CVE-2021-34412 is a high-severity vulnerability in Zoom Meetings, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2021-09-27.
How severe is CVE-2021-34412?
High severity. CVSS v3 base score is 7.8 out of 10.