CVE-2021-34410

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-27 · updated 2026-06-17
Weakness: CWE-732

Description

A user-writable application bundle unpacked during the install for all versions of the Zoom Plugin for Microsoft Outlook for Mac before 5.0.25611.0521 allows for privilege escalation to root.

Affected products

Zoom Plugin for Microsoft Outlook for Mac: before 5.0.25611.0521 — fixed in 5.0.25611.0521

How to fix

Upgrade to a fixed version: Zoom Plugin for Microsoft Outlook for Mac 5.0.25611.0521. Check the vendor advisory for mitigations.

References

https://explore.zoom.us/en/trust/security/security-bulletin/
https://explore.zoom.us/en/trust/security/security-bulletin/

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