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CWE-603

Use of Client-Side Authentication

10 CVEs Avg CVSS 7.8 MITRE
2
CRITICAL
5
HIGH
2
MEDIUM
0
LOW
1
POC
0
KEV

Monthly

CVE-2026-42098 HIGH This Week

Privilege escalation in Sparx Enterprise Architect 17.1 and earlier allows an authenticated low-privilege user to impersonate any other user, including administrators, by tampering with the client-side application (e.g., via a debugger). Because role-based access enforcement happens in the client rather than on the server (CWE-603), an attacker who has any valid login can gain full repository control. No public exploit identified at time of analysis, although technical write-ups are referenced.

Information Disclosure
NVD VulDB
CVSS 4.0
8.7
EPSS
0.0%
CVE-2026-8830 MEDIUM This Month

WebAuthn policy enforcement bypass in Red Hat Build of Keycloak allows low-privileged authenticated users to register credentials that violate administrator-configured realm security policies. The server-side processAction() method does not validate that newly registered WebAuthn credential parameters - such as public key algorithms - conform to the realm's defined WebAuthn policies, enabling a user to manipulate client-side JavaScript during the registration flow to submit non-compliant credential data. No public exploit has been identified at time of analysis; exploitation requires an authenticated session and is limited to integrity impact (policy bypass), with no direct confidentiality or availability consequence.

Authentication Bypass Red Hat
NVD VulDB
CVSS 3.1
4.3
EPSS
0.0%
CVE-2026-40551 HIGH Monitor

Client-side authentication bypass in mpGabinet 23.12.19 and earlier allows local authenticated attackers to impersonate arbitrary users by patching the application binary. An attacker with legitimate low-privilege access to the system can manipulate the compiled application code to skip login verification entirely, gaining unauthorized access as any user including administrators. EPSS score not available for this 2026 CVE; no active exploitation or public POC confirmed at time of analysis.

Authentication Bypass
NVD
CVSS 4.0
8.4
EPSS
0.0%
CVE-2025-30042 HIGH This Week

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. [CVSS 7.8 HIGH]

Information Disclosure Clininet
NVD
CVSS 3.1
7.8
EPSS
0.0%
CVE-2026-1363 CRITICAL Act Now

IAQS and I6 systems by JNC have a client-side enforcement vulnerability allowing unauthenticated attackers to bypass security controls and access server functionality.

Information Disclosure
NVD
CVSS 3.1
9.8
EPSS
0.0%
CVE-2025-64119 Monitor

A vulnerability in Nuvation Battery Management System allows Authentication Bypass.This issue affects Battery Management System: through 2.3.9.

Authentication Bypass
NVD
EPSS
0.1%
CVE-2025-61940 HIGH PATCH This Week

CVE-2025-61940 is a security vulnerability (CVSS 8.3). High severity vulnerability requiring prompt remediation.

Windows Information Disclosure Microsoft
NVD
CVSS 3.1
8.3
EPSS
0.1%
CVE-2025-12868 CRITICAL This Week

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. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure
NVD
CVSS 4.0
9.3
EPSS
0.3%
CVE-2025-24517 HIGH This Month

Use of client-side authentication issue exists in CHOCO TEI WATCHER mini (IB-MCT001) all versions. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure
NVD
CVSS 3.1
7.5
EPSS
0.5%
CVE-2024-52327 MEDIUM POC This Month

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. Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Authentication Bypass Home
NVD
CVSS 4.0
6.0
EPSS
0.1%
EPSS 0% CVSS 8.7
HIGH This Week

Privilege escalation in Sparx Enterprise Architect 17.1 and earlier allows an authenticated low-privilege user to impersonate any other user, including administrators, by tampering with the client-side application (e.g., via a debugger). Because role-based access enforcement happens in the client rather than on the server (CWE-603), an attacker who has any valid login can gain full repository control. No public exploit identified at time of analysis, although technical write-ups are referenced.

Information Disclosure
NVD VulDB
EPSS 0% CVSS 4.3
MEDIUM This Month

WebAuthn policy enforcement bypass in Red Hat Build of Keycloak allows low-privileged authenticated users to register credentials that violate administrator-configured realm security policies. The server-side processAction() method does not validate that newly registered WebAuthn credential parameters - such as public key algorithms - conform to the realm's defined WebAuthn policies, enabling a user to manipulate client-side JavaScript during the registration flow to submit non-compliant credential data. No public exploit has been identified at time of analysis; exploitation requires an authenticated session and is limited to integrity impact (policy bypass), with no direct confidentiality or availability consequence.

Authentication Bypass Red Hat
NVD VulDB
EPSS 0% CVSS 8.4
HIGH Monitor

Client-side authentication bypass in mpGabinet 23.12.19 and earlier allows local authenticated attackers to impersonate arbitrary users by patching the application binary. An attacker with legitimate low-privilege access to the system can manipulate the compiled application code to skip login verification entirely, gaining unauthorized access as any user including administrators. EPSS score not available for this 2026 CVE; no active exploitation or public POC confirmed at time of analysis.

Authentication Bypass
NVD
EPSS 0% CVSS 7.8
HIGH This Week

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. [CVSS 7.8 HIGH]

Information Disclosure Clininet
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

IAQS and I6 systems by JNC have a client-side enforcement vulnerability allowing unauthenticated attackers to bypass security controls and access server functionality.

Information Disclosure
NVD
EPSS 0%
Monitor

A vulnerability in Nuvation Battery Management System allows Authentication Bypass.This issue affects Battery Management System: through 2.3.9.

Authentication Bypass
NVD
EPSS 0% CVSS 8.3
HIGH PATCH This Week

CVE-2025-61940 is a security vulnerability (CVSS 8.3). High severity vulnerability requiring prompt remediation.

Windows Information Disclosure Microsoft
NVD
EPSS 0% CVSS 9.3
CRITICAL This Week

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. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure
NVD
EPSS 0% CVSS 7.5
HIGH This Month

Use of client-side authentication issue exists in CHOCO TEI WATCHER mini (IB-MCT001) all versions. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure
NVD
EPSS 0% CVSS 6.0
MEDIUM POC This Month

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. Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Authentication Bypass Home
NVD

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