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CWE-603

24 CVEs • Abstraction: Base

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.

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CVEs (24)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
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Aug 31, 2026
Aug 28, 2026
8.7 HIGH· v4
7.5 HIGH· v3
N/A· v2
The affected Ebyte device relies on client-managed authentication tokens without sufficient server-side validation. An attacker may replay or manipulate authentication tokens to gain unauthorized access to administrat...Show more
The affected Ebyte device relies on client-managed authentication tokens without sufficient server-side validation. An attacker may replay or manipulate authentication tokens to gain unauthorized access to administrative functionality.Show less
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Aug 31, 2026
Aug 28, 2026
9.3 CRITICAL· v4
9.8 CRITICAL· v3
N/A· v2
The Ebyte device relies on client side authentication logic that can be reproduced by unauthenticated users. An attacker may generate valid authentication requests and bypass authentication to obtain administrative ac...Show more
The Ebyte device relies on client side authentication logic that can be reproduced by unauthenticated users. An attacker may generate valid authentication requests and bypass authentication to obtain administrative access to the device.Show less
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Jun 17, 2026
May 19, 2026
8.7 HIGH· v4
N/A· v3
N/A· v2
Sparx Enterprise Architect software has a security feature that limits user's actions to those specified in the role. An authenticated attacker can modify the Enterprise Architect client behavior (e.g. using a debugger)...Show more
Sparx Enterprise Architect software has a security feature that limits user's actions to those specified in the role. An authenticated attacker can modify the Enterprise Architect client behavior (e.g. using a debugger) and log in as any other user or administrator - then it is possible to do every possible change to the repository. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 17.1 and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.Show less
1Redhat
1Build Of Keycloak
Jul 23, 2026
May 19, 2026
N/A· v4
4.3 MEDIUM· v3
N/A· v2
A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction() fails...Show more
A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction() fails to validate that the newly created credential's parameters, such as public key algorithms, match the realm's configured WebAuthn policies. This could lead to the creation of credentials that do not adhere to administrative security requirements, potentially weakening the overall security posture of the system by allowing non-compliant authentication methods.Show less
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Jun 17, 2026
Apr 28, 2026
8.4 HIGH· v4
N/A· v3
N/A· v2
mpGabinet performs client-side authentication. An attacker with access to any application instance connected to the backend server can bypass the login verification process by manipulating the application binary and auth...Show more
mpGabinet performs client-side authentication. An attacker with access to any application instance connected to the backend server can bypass the login verification process by manipulating the application binary and authenticate as an arbitrary user. This issue affects mpGabinet version 23.12.19 and below.Show less
1Cgm
1Clininet
Jun 17, 2026
Mar 2, 2026
9.0 CRITICAL· v4
7.8 HIGH· v3
N/A· v2
The CGM CLININET system provides smart card authentication; however, authentication is conducted locally on the client device, and, in reality, only the certificate number is used for access verification. As a result, po...Show more
The CGM CLININET system provides smart card authentication; however, authentication is conducted locally on the client device, and, in reality, only the certificate number is used for access verification. As a result, possession of the certificate number alone is sufficient for authentication, regardless of the actual presence of the smart card or ownership of the private key.Show less
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Jun 17, 2026
Jan 23, 2026
9.3 CRITICAL· v4
9.8 CRITICAL· v3
N/A· v2
IAQS and I6 developed by JNC has a Client-Side Enforcement of Server-Side Security vulnerability, allowing unauthenticated remote attackers to gain administrator privileges by manipulating the web front-end.
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Jun 17, 2026
Jan 2, 2026
9.3 CRITICAL· v4
N/A· v3
N/A· v2
A vulnerability in Nuvation Battery Management System allows Authentication Bypass.This issue affects Battery Management System: through 2.3.9.
1Mirion
1Biodose/nmis
Jun 17, 2026
Dec 2, 2025
8.7 HIGH· v4
8.8 HIGH· v3
N/A· v2
NMIS/BioDose V22.02 and previous versions rely on a common SQL Server user account to access data in the database. User access in the client application is restricted by a password authentication check in the client soft...Show more
NMIS/BioDose V22.02 and previous versions rely on a common SQL Server user account to access data in the database. User access in the client application is restricted by a password authentication check in the client software but the underlying database connection always has access. The latest version of NMIS/BioDose introduces an option to use Windows user authentication with the database, which would restrict this database connection.Show less
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Jun 17, 2026
Nov 10, 2025
9.3 CRITICAL· v4
9.8 CRITICAL· v3
N/A· v2
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.
1Rbi
1Restaurant Brands International Assistant
Jun 17, 2026
Oct 17, 2025
N/A· v4
9.9 CRITICAL· v3
N/A· v2
The Restaurant Brands International (RBI) assistant platform through 2025-09-06 relies on client-side authentication for use of the diagnostic screen.
1Rbi
1Restaurant Brands International Assistant
Jun 17, 2026
Oct 17, 2025
N/A· v4
5.8 MEDIUM· v3
N/A· v2
The Restaurant Brands International (RBI) assistant platform through 2025-09-06 relies on client-side authentication for submission of equipment orders.
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Jun 17, 2026
Mar 31, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Use of client-side authentication issue exists in CHOCO TEI WATCHER mini (IB-MCT001) all versions. If this issue is exploited, a remote attacker may obtain the product login password without authentication.
1Ecovacs
1Home
Jun 17, 2026
Jan 23, 2025
6.0 MEDIUM· v4
6.5 MEDIUM· v3
N/A· v2
The cloud service used by ECOVACS robot lawnmowers and vacuums allows authenticated attackers to bypass the PIN entry required to access the live video feed.
1Neumann
1Musasi
Jun 17, 2026
Oct 25, 2024
N/A· v4
7.5 HIGH· v3
N/A· v2
MUSASI version 3 contains an issue with use of client-side authentication. If this vulnerability is exploited, other users' credential and sensitive information may be retrieved.
1Markoni
2Markoni D (compact) Firmware
Markoni Dh (exciter+amplifiers) Firmware
Jun 17, 2026
Jun 27, 2024
9.3 CRITICAL· v4
9.8 CRITICAL· v3
N/A· v2
TELSAT marKoni FM Transmitters are vulnerable to an attacker bypassing authentication and gaining administrator privileges.
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Jun 17, 2026
Apr 23, 2024
N/A· v4
7.5 HIGH· v3
N/A· v2
An issue in Flipsnack v.18/03/2024 allows a local attacker to obtain sensitive information via the reader.gz.js file.
1Necta
1Wifi Mouse Server
Jun 17, 2026
Sep 19, 2022
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Due to a reliance on client-side authentication, the WiFi Mouse (Mouse Server) from Necta LLC's authentication mechanism is trivially bypassed, which can result in remote code execution.
1Siemens
4Cerberus Dms
Desigo CcDesigo Cc Compact+1 more
Jun 17, 2026
Jun 21, 2022
N/A· v4
9.8 CRITICAL· v3
6.8 MEDIUM· v2
A vulnerability has been identified in Cerberus DMS (All versions), Desigo CC (All versions), Desigo CC Compact (All versions), SIMATIC WinCC OA V3.16 (All versions in default configuration), SIMATIC WinCC OA V3.17 (All...Show more
A vulnerability has been identified in Cerberus DMS (All versions), Desigo CC (All versions), Desigo CC Compact (All versions), SIMATIC WinCC OA V3.16 (All versions in default configuration), SIMATIC WinCC OA V3.17 (All versions in non-default configuration), SIMATIC WinCC OA V3.18 (All versions in non-default configuration). Affected applications use client-side only authentication, when neither server-side authentication (SSA) nor Kerberos authentication is enabled. In this configuration, attackers could impersonate other users or exploit the client-server protocol without being authenticated.Show less
1Fresenius Kabi
6Agilia Connect Firmware
Agilia Partner Maintenance SoftwareLink+ Agilia Firmware+3 more
Jun 17, 2026
Jan 21, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
Fresenius Kabi Vigilant Software Suite (Mastermed Dashboard) version 2.0.1.3 allows user input to be validated on the client side without authentication by the server. The server should not rely on the correctness of the...Show more
Fresenius Kabi Vigilant Software Suite (Mastermed Dashboard) version 2.0.1.3 allows user input to be validated on the client side without authentication by the server. The server should not rely on the correctness of the data because users might not support or block JavaScript or intentionally bypass the client-side checks. An attacker with knowledge of the service user could circumvent the client-side control and login with service privileges.Show less