CWE-603

Use of Client-Side Authentication

A client/server product performs authentication within client code but not in server code, allowing server-side authentication to be bypassed via a modified client that omits the authentication check.

CVE-2025-12868 (GCVE-0-2025-12868)
Vulnerability from cvelistv5
Published
2025-11-10 03:14
Modified
2025-11-10 21:42
Severity ?
9.3 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-603 - Use of Client-Side Authentication
Summary
New Site Server developed by CyberTutor has a Use of Client-Side Authentication vulnerability, allowing unauthenticated remote attackers to modify the frontend code to gain administrator privileges on the website.
References
Impacted products
Vendor Product Version
CyberTutor New Site Server Version: 0
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CVE-2025-62649 (GCVE-0-2025-62649)
Vulnerability from cvelistv5
Published
2025-10-17 00:00
Modified
2025-10-29 15:05
Severity ?
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CWE
  • CWE-603 - Use of Client-Side Authentication
Summary
The Restaurant Brands International (RBI) assistant platform through 2025-09-06 relies on client-side authentication for submission of equipment orders.
References
Impacted products
Vendor Product Version
Restaurant Brands International assistant platform Version: 0   <
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Show details on NVD website

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CVE-2025-62650 (GCVE-0-2025-62650)
Vulnerability from cvelistv5
Published
2025-10-17 00:00
Modified
2025-10-29 15:04
Severity ?
8.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
CWE
  • CWE-603 - Use of Client-Side Authentication
Summary
The Restaurant Brands International (RBI) assistant platform through 2025-09-06 relies on client-side authentication for use of the diagnostic screen.
References
Impacted products
Vendor Product Version
Restaurant Brands International assistant platform Version: 0   <
Create a notification for this product.
Show details on NVD website

To clipboard 

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Mitigation

Phase: Architecture and Design

Description:

  • Do not rely on client side data. Always perform server side authentication.

No CAPEC attack patterns related to this CWE.

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