MitM attack in Zoom Workplace for Linux

1) Improper Certificate Validation

EUVDB-ID: #VU112509

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-46788

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to improper certificate validation. A remote attacker can perform MitM attack and compromise communication between the Zoom clients. 

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zoom Workplace Desktop App for Linux: 5.1.418436.0628 - 6.4.12 2180

Zoom Meeting SDK for Linux: 5.15.5 - 6.4.10

CPE2.3

• cpe:2.3:a:zoom_video_communications:zoom_client_for_linux:5.1.418436.0628:*:*:*:*:*:*:*
• cpe:2.3:a:zoom_video_communications:zoom_client_for_linux:5.1.422789.0705:*:*:*:*:*:*:*
• cpe:2.3:a:zoom_video_communications:zoom_client_for_linux:5.3.469451.0927:*:*:*:*:*:*:*
• cpe:2.3:a:zoom_video_communications:zoom_meeting_sdk_for_linux:5.15.5:*:*:*:*:*:*:*
• cpe:2.3:a:zoom_video_communications:zoom_meeting_sdk_for_linux:5.15.10:*:*:*:*:*:*:*
• cpe:2.3:a:zoom_video_communications:zoom_meeting_sdk_for_linux:5.15.12:*:*:*:*:*:*:*

External links

https://www.zoom.com/en/trust/security-bulletin/ZSB-25023/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.