CVE-2023-39216Network attack vector

Privilege escalation via undisclosed input validation flaw

Published Aug 8, 2023 · Updated Oct 10, 2024

Improper input validation in Zoom Desktop Client for Windows before 5.14.7 allows remote attackers to escalate privileges via network access. Zoom has not disclosed the affected component, the input accepted without adequate validation, or the operation performed with it. Exploitation requires unauthenticated network access and user interaction and can compromise confidentiality, integrity, and availability.

CVSS severity9.6
Critical
EPSS probability1.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Zoom Desktop Client for Windows before 5.14.7 allows remote attackers to escalate privileges via network access. Zoom has not disclosed the affected component, the input accepted without adequate validation, or the operation performed with it. Exploitation requires unauthenticated network access and user interaction and can compromise confidentiality, integrity, and availability.

The record

CVE
CVE-2023-39216
Published
Aug 8, 2023
Updated
Oct 10, 2024
Vendor
Zoom Video Communications, Inc.
Product
Zoom Workplace Desktop App
Classifications
CWE-80, T1068
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=before 5.14.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zoom Video Communications, Inc. · Zoom Workplace Desktop Appversion=before 5.14.7

Published CVSS scores

9.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.6Zoom Video Communications, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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