Common Weakness Enumeration

CWE-306

Allowed

Missing Authentication for Critical Function

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

3571 vulnerabilities reference this CWE, most recent first.

CVE-2020-36874 (GCVE-0-2020-36874)

Vulnerability from cvelistv5 – Published: 2025-11-26 22:12 – Updated: 2025-11-28 19:29
VLAI
Title
ACE SECURITY WIP-90113 Unauthenticated Configuration Disclosure
Summary
ACE SECURITY WIP-90113 HD cameras contain an unauthenticated configuration disclosure vulnerability in the /web/cgi-bin/hi3510/backup.cgi endpoint. The endpoint permits remote download of a compressed configuration backup without requiring authentication or authorization. The exposed backup may include administrative credentials and other sensitive device settings, enabling an unauthenticated remote attacker to obtain information that could facilitate further compromise of the camera or connected network.
Severity
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
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
Credits
Todor Donev
Show details on NVD website
To clipboard 

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CVE-2020-36873 (GCVE-0-2020-36873)

Vulnerability from cvelistv5 – Published: 2025-11-26 22:13 – Updated: 2025-11-28 19:26
VLAI
Title
Astak CM-818T3 Unauthenticated Configuration Disclosure
Summary
Astak CM-818T3 2.4GHz wireless security surveillance cameras contain an unauthenticated configuration disclosure vulnerability in the /web/cgi-bin/hi3510/backup.cgi endpoint. The endpoint permits remote download of a compressed configuration backup without requiring authentication or authorization. The exposed backup may include administrative credentials and other sensitive device settings, enabling an unauthenticated remote attacker to obtain information that could facilitate further compromise of the camera or connected network.
Severity
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
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
Credits
Todor Donev
Show details on NVD website
To clipboard 

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CVE-2020-36871 (GCVE-0-2020-36871)

Vulnerability from cvelistv5 – Published: 2025-11-26 22:15 – Updated: 2026-04-07 14:04
VLAI
Title
ESCAM QD-900 Unauthenticated Configuration Disclosure
Summary
ESCAM QD-900 WIFI HD cameras contain an unauthenticated configuration disclosure vulnerability in the /web/cgi-bin/hi3510/backup.cgi endpoint. The endpoint allows remote download of a compressed configuration backup without requiring authentication or authorization. The exposed backup can include administrative credentials and other sensitive device settings, enabling an unauthenticated remote attacker to obtain information that may facilitate further compromise of the camera or connected network.
Severity
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
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
Date Public
2020-02-24 00:00
Credits
Todor Donev
Show details on NVD website
To clipboard 

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CVE-2020-27285 (GCVE-0-2020-27285)

Vulnerability from cvelistv5 – Published: 2021-01-06 15:01 – Updated: 2026-06-02 20:08
VLAI
Summary
The default configuration of Crimson 3.1 (Build versions prior to 3119.001) allows a user to be able to read and modify the database without authentication.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-306 - MISSING AUTHENTICATION FOR CRITICAL FUNCTION CWE-306
Assigner
References
Impacted products
Vendor Product Version
n/a Crimson 3.1 Affected: Build versions prior to 3119.001
Show details on NVD website
To clipboard 

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CVE-2020-27225 (GCVE-0-2020-27225)

Vulnerability from cvelistv5 – Published: 2021-03-09 18:15 – Updated: 2024-08-04 16:11
VLAI
Summary
In versions 4.18 and earlier of the Eclipse Platform, the Help Subsystem does not authenticate active help requests to the local help web server, allowing an unauthenticated local attacker to issue active help commands to the associated Eclipse Platform process or Eclipse Rich Client Platform process.
Severity
No CVSS data available.
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
Vendor Product Version
The Eclipse Foundation Eclipse Platform Affected: unspecified , ≤ 4.18 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2020-26192 (GCVE-0-2020-26192)

Vulnerability from cvelistv5 – Published: 2021-02-09 21:25 – Updated: 2024-09-17 02:21
VLAI
Summary
Dell EMC PowerScale OneFS versions 8.2.0 - 9.1.0 contain a privilege escalation vulnerability. A non-admin user with either ISI_PRIV_LOGIN_CONSOLE or ISI_PRIV_LOGIN_SSH may potentially exploit this vulnerability to read arbitrary data, tamper with system software or deny service to users. Note: no non-admin users or roles have these privileges by default.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
Vendor Product Version
Dell PowerScale OneFS Affected: unspecified , < 8.2.2, 9.1+ (custom)
Create a notification for this product.
Date Public
2020-12-18 00:00
Show details on NVD website
To clipboard 

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CVE-2020-25697 (GCVE-0-2020-25697)

Vulnerability from cvelistv5 – Published: 2021-05-26 12:08 – Updated: 2024-08-04 15:40
VLAI
Summary
A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw allows an attacker to take control of an X application by impersonating the server it is expecting to connect to.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a xorg-x11-server Affected: All
Show details on NVD website
To clipboard 

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CVE-2020-25228 (GCVE-0-2020-25228)

Vulnerability from cvelistv5 – Published: 2020-12-14 21:05 – Updated: 2024-08-04 15:33
VLAI
Summary
A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). A service available on port 10005/tcp of the affected devices could allow complete access to all services without authorization. An attacker could gain full control over an affected device, if he has access to this service. The system manual recommends to protect access to this port.
Severity
No CVSS data available.
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
Vendor Product Version
Siemens LOGO! 8 BM (incl. SIPLUS variants) Affected: All versions < V8.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2020-15799 (GCVE-0-2020-15799)

Vulnerability from cvelistv5 – Published: 2021-01-12 20:18 – Updated: 2024-08-04 13:30
VLAI
Summary
A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0). The vulnerability could allow an unauthenticated attacker to reboot the device over the network by using special urls from integrated web server of the affected products.
Severity
No CVSS data available.
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2020-15798 (GCVE-0-2020-15798)

Vulnerability from cvelistv5 – Published: 2021-02-09 15:38 – Updated: 2026-06-02 18:59
VLAI
Summary
A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V16 Update 3a), SIMATIC HMI KTP Mobile Panels (All versions < V16 Update 3a), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). Affected devices with enabled telnet service do not require authentication for this service. This could allow a remote attacker to gain full access to the device. (ZDI-CAN-12046)
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-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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Mitigation
Architecture and Design
  • Divide the software into anonymous, normal, privileged, and administrative areas. Identify which of these areas require a proven user identity, and use a centralized authentication capability.
  • Identify all potential communication channels, or other means of interaction with the software, to ensure that all channels are appropriately protected, including those channels that are assumed to be accessible only by authorized parties. Developers sometimes perform authentication at the primary channel, but open up a secondary channel that is assumed to be private. For example, a login mechanism may be listening on one network port, but after successful authentication, it may open up a second port where it waits for the connection, but avoids authentication because it assumes that only the authenticated party will connect to the port.
  • In general, if the software or protocol allows a single session or user state to persist across multiple connections or channels, authentication and appropriate credential management need to be used throughout.
Mitigation MIT-15
Architecture and Design

For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

Mitigation
Architecture and Design
  • Where possible, avoid implementing custom, "grow-your-own" authentication routines and consider using authentication capabilities as provided by the surrounding framework, operating system, or environment. These capabilities may avoid common weaknesses that are unique to authentication; support automatic auditing and tracking; and make it easier to provide a clear separation between authentication tasks and authorization tasks.
  • In environments such as the World Wide Web, the line between authentication and authorization is sometimes blurred. If custom authentication routines are required instead of those provided by the server, then these routines must be applied to every single page, since these pages could be requested directly.
Mitigation MIT-4.5
Architecture and Design

Strategy: Libraries or Frameworks

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • For example, consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator [REF-45].
Mitigation
Implementation System Configuration Operation

When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to require strong authentication for users who should be allowed to access the data [REF-1297] [REF-1298] [REF-1302].

CAPEC-12: Choosing Message Identifier

This pattern of attack is defined by the selection of messages distributed via multicast or public information channels that are intended for another client by determining the parameter value assigned to that client. This attack allows the adversary to gain access to potentially privileged information, and to possibly perpetrate other attacks through the distribution means by impersonation. If the channel/message being manipulated is an input rather than output mechanism for the system, (such as a command bus), this style of attack could be used to change the adversary's identifier to more a privileged one.

CAPEC-166: Force the System to Reset Values

An attacker forces the target into a previous state in order to leverage potential weaknesses in the target dependent upon a prior configuration or state-dependent factors. Even in cases where an attacker may not be able to directly control the configuration of the targeted application, they may be able to reset the configuration to a prior state since many applications implement reset functions.

CAPEC-216: Communication Channel Manipulation

An adversary manipulates a setting or parameter on communications channel in order to compromise its security. This can result in information exposure, insertion/removal of information from the communications stream, and/or potentially system compromise.

CAPEC-36: Using Unpublished Interfaces or Functionality

An adversary searches for and invokes interfaces or functionality that the target system designers did not intend to be publicly available. If interfaces fail to authenticate requests, the attacker may be able to invoke functionality they are not authorized for.

CAPEC-62: Cross Site Request Forgery

An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.

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