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CVE-2021-34419

HTML injection in Zoom Linux client

MEDIUM
5.3
CVSS Score
Published: November 11, 2021 at 10:59 PM UTC
Updated: June 17, 2026 at 03:55 AM UTC
2 products affected across 2 vendorsZoom Client for MeetingsZoom Client for Meetings

Using Zoom Client for Meetings for Ubuntu Linux by Zoom Video Communications Inc?

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.6%

Description

In the Zoom Client for Meetings for Ubuntu Linux before version 5.1.0, there is an HTML injection flaw when sending a remote control request to a user in the process of in-meeting screen sharing. This could allow meeting participants to be targeted for social engineering attacks.

Affected

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

Zoom Client for Meetings· Zoom
95%
v < 5.1.0
Affected range stops below 5.1.0, so it looks safe — our inference, not a vendor statement
Zoom Client for Meetings· Zoom Video Communications
60%
v < 5.1.0
Affected range stops below 5.1.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://explore.zoom.us/en/trust/security/security-bulletin

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-74

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