CVE-2023-39210

Local disclosure via cleartext sensitive-data storage

Published Aug 8, 2023 · Updated Oct 4, 2024

Cleartext storage in Zoom Client SDK for Windows before 5.15.0 allows local users to read stored sensitive information. Zoom has not published which SDK component writes the data in cleartext, the storage location, or the data involved. Exploitation requires local access and authenticated user privileges; the reported consequence is confidentiality loss without data modification or service interruption.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext storage in Zoom Client SDK for Windows before 5.15.0 allows local users to read stored sensitive information. Zoom has not published which SDK component writes the data in cleartext, the storage location, or the data involved. Exploitation requires local access and authenticated user privileges; the reported consequence is confidentiality loss without data modification or service interruption.

The record

CVE
CVE-2023-39210
Published
Aug 8, 2023
Updated
Oct 4, 2024
Vendor
Zoom Video Communications, Inc.
Product
Zoom Client SDK for Windows
Classifications
CWE-312
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=before 5.15.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Zoom Video Communications, Inc. · Zoom Client SDK for Windowsversion=before 5.15.0

Published CVSS scores

5.5Zoom Video Communications, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

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No observations available

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

Weakness, pattern, technique

CWE-312Cleartext Storage of Sensitive Information

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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