CVE-2021-34413

Published: Sep 27, 2021Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 1.6 / Impact: 5.9

Source: NVD

Description

All versions of the Zoom Plugin for Microsoft Outlook for MacOS before 5.3.52553.0918 contain a Time-of-check Time-of-use (TOC/TOU) vulnerability during the plugin installation process. This could allow a standard user to write their own malicious application to the plugin directory, allowing the malicious application to execute in a privileged context.

Affected (1)

Products: Zoom: Zoom Plugin For Microsoft Outlook

1 product

Zoom Plugin For Microsoft Outlook

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Zoom Zoom Plugin For Microsoft Outlook	Before 5.3.52553.0918

Related CWEs

Time-of-check Time-of-use (TOCTOU) Race Condition

The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

References (2)

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

Source: security@zoom.us

Vendor Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.