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CVE-2023-28597

Improper trust boundary implementation for SMB in Zoom Clients

HIGH
7.5
CVSS Score
Published: March 27, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:48 AM UTC
6 products affected across 2 vendorsRoomsZoomVirtual Desktop Infrastructure· also runs on 1 platform

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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

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

Rooms· Zoom
95%
v < 5.13.5
Affected range stops below 5.13.5, so it looks safe — our inference, not a vendor statement
Virtual Desktop Infrastructure· Zoom
95%
v < 5.13.10
Affected range stops below 5.13.10, so it looks safe — our inference, not a vendor statement
microsoft-windows (environment)
Zoom· Zoom
95%
v < 5.13.5
Affected range stops below 5.13.5, so it looks safe — our inference, not a vendor statement
Meetings Client· Zoom Video Communications
60%
v < 5.13.5
Affected range stops below 5.13.5, so it looks safe — our inference, not a vendor statement
Zoom Rooms· Zoom Video Communications
60%
v < 5.13.5
Affected range stops below 5.13.5, so it looks safe — our inference, not a vendor statement
Zoom VDI Client· Zoom Video Communications
60%
v < 5.13.10
Affected range stops below 5.13.10, so it looks safe — our inference, not a vendor statement

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

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)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]
Attack Vector
ADJACENT_NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-501NVD-CWE-noinfo

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