CVE-2023-39206

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-11-14 · updated 2026-06-17
Weakness: CWE-120

Description

Buffer overflow in some Zoom clients may allow an unauthenticated user to conduct a denial of service via network access.

Affected products

Zoom Workplace: before 5.16.0 — fixed in 5.16.0
Zoom Video Communications, Inc. Zoom Rooms for Windows: before 5.16.0 — fixed in 5.16.0
Zoom Video Software Development Kit: before 1.9.0 — fixed in 1.9.0
Zoom Virtual Desktop Infrastructure: before 5.14.13; from 5.15.0 before 5.15.11 — fixed in 5.14.13, 5.15.11
Zoom Video Communications, Inc. Zoom Desktop Client for Windows: before 5.16.0 — fixed in 5.16.0

How to fix

Upgrade to a fixed version: Zoom Workplace 5.16.0; Zoom Video Communications, Inc. Zoom Rooms for Windows 5.16.0; Zoom Video Software Development Kit 1.9.0; Zoom Virtual Desktop Infrastructure 5.14.13, 5.15.11; Zoom Video Communications, Inc. Zoom Desktop Client for Windows 5.16.0. Check the vendor advisory for mitigations.

References

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