Common Weakness Enumeration

CWE-603

Allowed

Use of Client-Side Authentication

Abstraction: Base · Status: Draft

API response cwe.mitre.org

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.

50 vulnerabilities reference this CWE, most recent first.

CVE-2022-3218 (GCVE-0-2022-3218)

Vulnerability from cvelistv5 – Published: 2022-09-19 16:50 – Updated: 2024-09-16 19:05
VLAI
Title
Necta WiFi Mouse (Mouse Server) client-side authentication bypass
Summary
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.
Severity
No CVSS data available.
CWE
  • CWE-603 - Use of Client-Side Authentication
Assigner
rapid7 CNA under the mitre root
CNA scorecard B 76/100 over 59 records in the last 180 days details
References
Impacted products
Vendor Product Version
Necta LLC WiFi Mouse (Mouse Server) Affected: 1.8.3.4 , ≤ 1.8.3.4 (custom)
Affected: 1.8.2.3 , ≤ 1.8.2.3 (custom)
Create a notification for this product.
Date Public
2021-02-25 00:00
Credits
H4rk3nz0, REDHATAUGUST, and h00die discovered and reported this vulnerability.
Show details on NVD website
To clipboard 

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CVE-2021-43355 (GCVE-0-2021-43355)

Vulnerability from cvelistv5 – Published: 2022-01-21 18:17 – Updated: 2025-04-16 16:46
VLAI
Title
Fresenius Kabi Agilia Connect Infusion System use of client side authentication
Summary
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.
Severity
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-16 15:59 UTC
CWE
  • CWE-603 - Use of client side authentication
Assigner
icscert CNA under the icscert root
CNA scorecard B 75/100 over 342 records in the last 180 days details
References
Impacted products
Vendor Product Version
Fresenius Kabi Vigilant Software Suite (Mastermed Dashboard) Affected: unspecified , < 2.0.1.3 (custom)
Create a notification for this product.
Credits
Julian Suleder (ERNW Research GmbH), Nils Emmerich (ERNW Research GmbH), Raphael Pavlidis (ERNW Research GmbH), and Dr. Oliver Matula (ERNW Enno Rey Netzwerke GmbH) reported these vulnerabilities to the German Federal Office for Information Security (BSI) in the context of the BSI project ManiMed (Medical Device Manipulation Project).
Show details on NVD website
To clipboard 

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CVE-2020-27266 (GCVE-0-2020-27266)

Vulnerability from cvelistv5 – Published: 2021-01-19 21:17 – Updated: 2024-08-04 16:11
VLAI
Summary
In SOOIL Developments Co., Ltd Diabecare RS, AnyDana-i and AnyDana-A, a client-side control vulnerability in the insulin pump and its AnyDana-i and AnyDana-A mobile applications allows physically proximate attackers to bypass user authentication checks via Bluetooth Low Energy.
Severity
No CVSS data available.
CWE
  • CWE-603 - USE OF CLIENT-SIDE AUTHENTICATION CWE-603
Assigner
icscert CNA under the icscert root
CNA scorecard B 75/100 over 342 records in the last 180 days details
References
Impacted products
Vendor Product Version
n/a SOOIL Developments Co., Ltd Diabecare RS, AnyDana-i and AnyDana-A Affected: Dana Diabecare RS, AnyDana-i, AnyDana-A All versions prior to 3.0
Show details on NVD website
To clipboard 

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CVE-2020-7591 (GCVE-0-2020-7591)

Vulnerability from cvelistv5 – Published: 2020-10-15 18:45 – Updated: 2024-08-04 09:33
VLAI
Summary
A vulnerability has been identified in SIPORT MP (All versions < 3.2.1). Vulnerable versions of the device could allow an authenticated attacker to impersonate other users of the system and perform (potentially administrative) actions on behalf of those users if the single sign-on feature ("Allow logon without password") is enabled.
Severity
No CVSS data available.
CWE
  • CWE-603 - Use of Client-Side Authentication
Assigner
siemens CNA under the icscert root
CNA scorecard C 65/100 over 98 records in the last 180 days details
References
Impacted products
Vendor Product Version
Siemens SIPORT MP Affected: All versions < 3.2.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2020-6988 (GCVE-0-2020-6988)

Vulnerability from cvelistv5 – Published: 2020-03-16 15:38 – Updated: 2026-06-03 13:21
VLAI
Summary
Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500 Software v12.001 and prior, A remote, unauthenticated attacker can send a request from the RSLogix 500 software to the victim’s MicroLogix controller. The controller will then respond to the client with used password values to authenticate the user on the client-side. This method of authentication may allow an attacker to bypass authentication altogether, disclose sensitive information, or leak credentials.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-03 13:21 UTC
CWE
  • CWE-603 - USE OF CLIENT-SIDE AUTHENTICATION CWE-603
Assigner
icscert CNA under the icscert root
CNA scorecard B 75/100 over 342 records in the last 180 days details
References
Impacted products
Vendor Product Version
n/a Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500 Software v12.001 and prior Affected: Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500 Software v12.001 and prior
Show details on NVD website
To clipboard 

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CVE-2017-7909 (GCVE-0-2017-7909)

Vulnerability from cvelistv5 – Published: 2017-05-06 00:00 – Updated: 2024-08-05 16:19
VLAI
Summary
A Use of Client-Side Authentication issue was discovered in Advantech B+B SmartWorx MESR901 firmware versions 1.5.2 and prior. The web interface uses JavaScript to check client authentication and redirect unauthorized users. Attackers may intercept requests and bypass authentication to access restricted web pages.
Severity
No CVSS data available.
CWE
Assigner
icscert CNA under the icscert root
CNA scorecard B 75/100 over 342 records in the last 180 days details
References
Impacted products
Vendor Product Version
n/a Advantech B+B SmartWorx MESR901 Affected: Advantech B+B SmartWorx MESR901
Date Public
2017-05-05 00:00
Show details on NVD website
To clipboard 

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GHSA-28C6-247X-R9MW

Vulnerability from github – Published: 2022-06-22 00:00 – Updated: 2022-06-30 00:00
VLAI
Details

A vulnerability has been identified in 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.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

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    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-836027.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-3J85-7795-MC66

Vulnerability from github – Published: 2025-11-10 06:30 – Updated: 2025-11-10 06:30
VLAI
Details

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.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2025-12868"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-603"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-10T04:15:41Z",
    "severity": "CRITICAL"
  },
  "details": "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.",
  "id": "GHSA-3j85-7795-mc66",
  "modified": "2025-11-10T06:30:25Z",
  "published": "2025-11-10T06:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-12868"
    },
    {
      "type": "WEB",
      "url": "https://www.twcert.org.tw/en/cp-139-10492-84a10-2.html"
    },
    {
      "type": "WEB",
      "url": "https://www.twcert.org.tw/tw/cp-132-10493-bf807-1.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-4R5Q-F55R-9FRX

Vulnerability from github – Published: 2026-04-28 15:30 – Updated: 2026-09-30 12:35
VLAI
Details

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.

Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-40551"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-603"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-28T14:16:13Z",
    "severity": "HIGH"
  },
  "details": "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.  \n\nThis issue affects mpGabinet version 23.12.19 and below.",
  "id": "GHSA-4r5q-f55r-9frx",
  "modified": "2026-09-30T12:35:09Z",
  "published": "2026-04-28T15:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40551"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/posts/2026/04/CVE-2026-40550"
    },
    {
      "type": "WEB",
      "url": "https://www.binsoft.pl/produkty"
    },
    {
      "type": "WEB",
      "url": "https://www.mpgabinet.pl"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-5733-JR78-JP2W

Vulnerability from github – Published: 2026-08-28 00:32 – Updated: 2026-08-28 00:32
VLAI
Details

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.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-76945"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-603"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T00:18:15Z",
    "severity": "HIGH"
  },
  "details": "The affected Ebyte device relies on client-managed authentication tokens\n without sufficient server-side validation. An attacker may replay or \nmanipulate authentication tokens to gain unauthorized access to \nadministrative functionality.",
  "id": "GHSA-5733-jr78-jp2w",
  "modified": "2026-08-28T00:32:04Z",
  "published": "2026-08-28T00:32:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76945"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-237-06.json"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-06"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}
Mitigation
Architecture and Design

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

No CAPEC attack patterns related to this CWE.

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