CVE-2021-34425

Server Side Request Forgery in Zoom Client for Meetings chat

MEDIUM

6.1

CVSS Score

Published: December 14, 2021 at 07:25 PM UTC

Updated: June 17, 2026 at 03:55 AM UTC

3 products affected across 2 vendorsMeetingsMeetings ClientZoom Client for Meetings· also runs on 5 platforms

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Severity

MEDIUM6.1

Exploit prediction

EPSS 0.8%

Description

The Zoom Client for Meetings before version 5.7.3 (for Android, iOS, Linux, macOS, and Windows) contain a server side request forgery vulnerability in the chat\'s "link preview" functionality. In versions prior to 5.7.3, if a user were to enable the chat\'s "link preview" feature, a malicious actor could trick the user into potentially sending arbitrary HTTP GET requests to URLs that the actor cannot reach directly.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Meetings · Zoom

95%

v < 5.7.3

Affected range stops below 5.7.3, so it looks safe — our inference, not a vendor statement

apple-iphone-os (environment) · apple-macos (environment) · google-android (environment) · linux-linux-kernel (environment) · microsoft-windows (environment)

Meetings Client · Zoom Video Communications

60%

v < 5.7.3

Affected range stops below 5.7.3, so it looks safe — our inference, not a vendor statement

Zoom Client for Meetings · Zoom Video Communications

60%

v < 5.7.3

Affected range stops below 5.7.3, so it looks safe — our inference, not a vendor statement