Vulnerability-Lookup

NCSC-2026-0249

Vulnerability from csaf_ncscnl - Published: 2026-07-17 14:37 - Updated: 2026-07-17 14:37

Summary

Kwetsbaarheden verholpen in Zoom

Notes

The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.

Feiten: Zoom heeft kwetsbaarheden verholpen in Zoom Client voor Windows, Zoom Rooms voor Windows en andere Zoom Windows-producten zoals de Windows Desktop Client, VDI Client en Meeting SDK.

Interpretaties: De kwetsbaarheden betreffen onder andere een TOCTOU race condition die door een geauthenticeerde lokale gebruiker kan worden misbruikt om privileges te escaleren. Daarnaast is er een onjuiste privilege management in Zoom Rooms voor Windows (versies eerder dan 7.1.0), waardoor geauthenticeerde lokale gebruikers hogere toegangsrechten kunnen verkrijgen dan bedoeld. Verder zijn er problemen met onjuiste inputvalidatie in de Zoom Windows Desktop Client, VDI Client en Meeting SDK, waardoor niet-geauthenticeerde aanvallers via netwerktoegang controle over gebruikersaccounts kunnen verkrijgen. Deze kwetsbaarheden ontstaan door onvoldoende validatie van inputdata en inadequate handhaving van privilege boundaries binnen de applicaties.

Oplossingen: Zoom heeft updates uitgebracht om de kwetsbaarheden in de verschillende Windows Clients te verhelpen. Zie bijgevoegde referenties voor meer informatie.

Kans: medium

Schade: medium

CWE-20: Improper Input Validation

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

CVE-2026-53410

A TOCTOU race condition in the installation and uninstallation processes of certain Zoom Clients for Windows allows an authenticated local user to escalate privileges.

7.0 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Affected products

Known affected 6 products

Product	Identifier	Version	Remediation
vers:unknown/* Zoom Communications / Zoom Clients		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Rooms		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Workplace VDI Plugin		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Workplace for Windows		vers:unknown/*
vers:unknown/* Zoom Video Communications / Zoom Video Communications Rooms		vers:unknown/*
vers:unknown/* Zoom Video Communications / Zoom Video Communications Workplace		vers:unknown/*

CVE-2026-53409

An improper privilege management vulnerability in Zoom Rooms for Windows versions prior to 7.1.0 enables authenticated local users to escalate their privileges.

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Known affected 6 products

Product	Identifier	Version	Remediation
vers:unknown/* Zoom Communications / Zoom Clients		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Rooms		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Workplace VDI Plugin		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Workplace for Windows		vers:unknown/*
vers:unknown/* Zoom Video Communications / Zoom Video Communications Rooms		vers:unknown/*
vers:unknown/* Zoom Video Communications / Zoom Video Communications Workplace		vers:unknown/*

CVE-2026-53411

A TOCTOU race condition in the installation and uninstallation processes of certain Zoom Clients for Windows allows an authenticated local user to escalate privileges.

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Known affected 6 products

Product	Identifier	Version	Remediation
vers:unknown/* Zoom Communications / Zoom Clients		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Rooms		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Workplace VDI Plugin		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Workplace for Windows		vers:unknown/*
vers:unknown/* Zoom Video Communications / Zoom Video Communications Rooms		vers:unknown/*
vers:unknown/* Zoom Video Communications / Zoom Video Communications Workplace		vers:unknown/*

CVE-2026-53412

Improper input validation vulnerabilities in Zoom's Windows Desktop Client, VDI Client, and Meeting SDK could allow unauthenticated attackers to compromise user accounts via network access.

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Known affected 6 products

Product	Identifier	Version	Remediation
vers:unknown/* Zoom Communications / Zoom Clients		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Rooms		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Workplace VDI Plugin		vers:unknown/*
vers:unknown/* Zoom Communications / Zoom Workplace for Windows		vers:unknown/*
vers:unknown/* Zoom Video Communications / Zoom Video Communications Rooms		vers:unknown/*
vers:unknown/* Zoom Video Communications / Zoom Video Communications Workplace		vers:unknown/*

References

8 references

URL	Category
https://www.zoom.com/en/trust/security-bulletin/Z…	external
https://www.zoom.com/en/trust/security-bulletin/Z…	external
https://www.zoom.com/en/trust/security-bulletin/Z…	external
https://www.zoom.com/en/trust/security-bulletin/Z…	external
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-…	self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-…	self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-…	self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-…	self

JSON

To clipboard

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        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
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CVE-2026-53409 (GCVE-0-2026-53409)

Vulnerability from cvelistv5 – Published: 2026-07-16 21:08 – Updated: 2026-07-17 13:20

Summary

Improper Privilege Management in Zoom Rooms for Windows before version 7.1.0 may allow an authenticated user to conduct an escalation of privilege via local access.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-20 - Improper input validation

Assigner

Zoom

References

1 reference

URL	Tags
https://www.zoom.com/en/trust/security-bulletin/z…

Impacted products

1 product

Vendor	Product	Version
Zoom Communications	Zoom Rooms	Affected: 0 , < 7.1.0 (custom)

Date Public

2026-07-04 12:00

Show details on NVD website

JSON

To clipboard

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CVE-2026-53410 (GCVE-0-2026-53410)

Vulnerability from cvelistv5 – Published: 2026-07-16 21:11 – Updated: 2026-07-17 13:19

Title

Zoom Clients for Windows - Race Condition

Summary

A time-of-check to time-of-use (TOCTOU) race condition in the installation and uninstallation process of certain Zoom Clients for Windows could allow an authenticated local user to escalate privileges.

Severity

7 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-367 - Time-of-check time-of-use (TOCTOU) race condition

Assigner

Zoom

References

1 reference

URL	Tags
https://www.zoom.com/en/trust/security-bulletin/z…

Impacted products

1 product

Vendor	Product	Version
Zoom Communications	Zoom Clients	Affected: see references (custom)

Date Public

2026-07-14 12:00

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-53410",
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CVE-2026-53411 (GCVE-0-2026-53411)

Vulnerability from cvelistv5 – Published: 2026-07-16 21:13 – Updated: 2026-07-17 13:19

Title

Zoom Workplace VDI Plugin for Windows - Improper Input Validation

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-20 - Improper input validation

Assigner

Zoom

References

1 reference

URL	Tags
https://www.zoom.com/en/trust/security-bulletin/z…

Impacted products

1 product

Vendor	Product	Version
Zoom Communications	Zoom Workplace VDI Plugin	Affected: 0 , < 6.6.14 (custom)

Date Public

2026-07-14 12:00

Show details on NVD website

JSON

To clipboard

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CVE-2026-53412 (GCVE-0-2026-53412)

Vulnerability from cvelistv5 – Published: 2026-07-16 21:15 – Updated: 2026-07-17 13:18

Title

Zoom Workplace VDI Plugin for Windows - Improper Input Validation

Summary

Improper Input Validation in Zoom Desktop Client for Windows, Zoom VDI Client for Windows, and Zoom Meeting SDK for Windows may allow an unauthenticated user to conduct an account takeover via network access.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-20 - Improper input validation

Assigner

Zoom

References

1 reference

URL	Tags
https://www.zoom.com/en/trust/security-bulletin/z…

Impacted products

1 product

Vendor	Product	Version
Zoom Communications	Zoom Workplace for Windows	Affected: 0 , < 7.0.0 (custom)

Date Public

2026-07-14 12:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

NCSC-2026-0249

CVE-2026-53409 (GCVE-0-2026-53409)

CVE-2026-53410 (GCVE-0-2026-53410)

CVE-2026-53411 (GCVE-0-2026-53411)

CVE-2026-53412 (GCVE-0-2026-53412)

Tags

Sightings

Nomenclature