CVE-2023-22881: Denial of Service in Zoom Clients

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: 2023-03-16 · updated 2026-06-17
Weakness: CWE-119

Description

Zoom clients before version 5.13.5 contain a STUN parsing vulnerability. A malicious actor could send specially crafted UDP traffic to a victim Zoom client to remotely cause the client to crash, causing a denial of service.

Affected products

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 Desktop Client for Windows 5.13.5. Check the vendor advisory for mitigations.

References

https://explore.zoom.us/en/trust/security/security-bulletin/
https://explore.zoom.us/en/trust/security/security-bulletin/

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