CVE-2023-28597: Improper trust boundary implementation for SMB in Zoom Clients

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-27 · updated 2026-06-17
Weakness: CWE-501

Description

Zoom clients prior to 5.13.5 contain an improper trust boundary implementation vulnerability. If a victim saves a local recording to an SMB location and later opens it using a link from Zoom’s web portal, an attacker positioned on an adjacent network to the victim client could set up a malicious SMB server to respond to client requests, causing the client to execute attacker controlled executables. This could result in an attacker gaining access to a user's device and data, and remote code execution.

Affected products

Zoom Video Communications, Inc. Zoom Rooms for Windows: before 5.13.5 — fixed in 5.13.5
Zoom Virtual Desktop Infrastructure: before 5.13.10 — fixed in 5.13.10
Zoom Video Communications, Inc. Zoom Desktop Client for Windows: before 5.13.5 — fixed in 5.13.5

How to fix

Upgrade to a fixed version: Zoom Video Communications, Inc. Zoom Rooms for Windows 5.13.5; Zoom Virtual Desktop Infrastructure 5.13.10; Zoom Video Communications, Inc. Zoom Desktop Client for Windows 5.13.5. Check the vendor advisory for mitigations.

References

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