Weakness (CWE)
CWE-306: Missing Authentication for Critical Functionality
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
How to prevent it (5 mitigations)
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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.
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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.
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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.
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Architecture and Design
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].
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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].
Source: MITRE CWE-306
123 results · Clear filters · Feed
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Critical 9.3CVE-2025-34101 Public exploit
Serviio Media Server Unauthenticated Command Injection via checkStreamUrl VIDEO Parameter
An unauthenticated command injection vulnerability exists in Serviio Media Server versions 1.4 through 1.8 on Windows, in the /rest/action API endpoint exposed by the console component (default port 23423). The checkStreamUrl method accepts a VIDEO parameter …
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Critical 10.0
WordPress Pie Register Plugin ≤ 3.7.1.4 Authentication Bypass RCE
An authentication bypass vulnerability exists in the WordPress Pie Register plugin ≤ 3.7.1.4 that allows unauthenticated attackers to impersonate arbitrary users by submitting a crafted POST request to the login endpoint. By setting social_site=true and manip…
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Critical 9.3CVE-2025-34089 Public exploit
Remote for Mac Unauthenticated Remote Code Execution via AppleScript Injection
An unauthenticated remote code execution vulnerability exists in Remote for Mac, a macOS remote control utility developed by Aexol Studio, in versions up to and including 2025.7. When the application is configured with authentication disabled (i.e., the "Allo…
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Critical 10.0
stamparm/maltrail <=0.54 Remote Command Execution
An unauthenticated command injection vulnerability exists in stamparm/maltrail (Maltrail) versions <=0.54. A remote attacker can execute arbitrary operating system commands via the username parameter in a POST request to the /login endpoint. This occurs due t…
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Critical 9.4CVE-2025-34071 Public exploit
GFI Kerio Control Unsigned System Image Upload Root Code Execution
A remote code execution vulnerability in GFI Kerio Control 9.4.5 allows attackers with administrative access to upload and execute arbitrary code through the firmware upgrade feature. The system upgrade mechanism accepts unsigned .img files, which can be modi…
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Critical 9.5CVE-2025-34069 Public exploit
GFI Kerio Control GFIAgent Authentication Bypass via Proxy Forwarding
An authentication bypass vulnerability exists in GFI Kerio Control 9.4.5 due to insecure default proxy configuration and weak access control in the GFIAgent service. The non-transparent proxy on TCP port 3128 can be used to forward unauthenticated requests to…
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Critical 10.0
Pilz: Missing Authentication in Node-RED integration
An unauthenticated remote attacker can run arbitrary commands on the affected devices with high privileges because the authentication for the Node_RED server is not configured by default.
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Critical 9.4
MCP Inspector proxy server lacks authentication between the Inspector client and proxy
The MCP inspector is a developer tool for testing and debugging MCP servers. Versions of MCP Inspector below 0.14.1 are vulnerable to remote code execution due to lack of authentication between the Inspector client and proxy, allowing unauthenticated requests…
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Critical 10.0CVE-2025-32440 Public exploit
NetAlertX Vulnerable to Authentication Bypass
NetAlertX is a network, presence scanner and alert framework. Prior to version 25.4.14, it is possible to bypass the authentication mechanism of NetAlertX to update settings without authentication. An attacker can trigger sensitive functions within util.php b…
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Critical 10.0
NetAlertX 23.01.14 through 24.x before 24.10.12 allows unauthenticated command injection via settings update because fu…
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Critical 9.3
Commvault Command Center Innovation Release <= 11.38.25 Unathenticated Install Package Path Traversal
The Commvault Command Center Innovation Release allows an unauthenticated actor to upload ZIP files that represent install packages that, when expanded by the target server, are vulnerable to path traversal vulnerability that can result in Remote Code Executi…
KEV May 2, 2025 -
Critical 10.0
Erlang/OTP SSH Vulnerable to Pre-Authentication RCE
Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20, a SSH server may allow an attacker to perform unauthenticated remote code execution (RCE). By exploiting a flaw in SSH protoc…
KEV Jun 9, 2025 -
Critical 9.8
Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code
Langflow versions prior to 1.3.0 are susceptible to code injection in the /api/v1/validate/code endpoint. A remote and unauthenticated attacker can send crafted HTTP requests to execute arbitrary code.
KEV May 5, 2025 -
Critical 10.0CVE-2025-24865 Public exploit
mySCADA myPRO Manager Missing Authentication for Critical Function
The administrative web interface of mySCADA myPRO Manager can be accessed without authentication which could allow an unauthorized attacker to retrieve sensitive information and upload files without the associated password.
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Critical 9.8CVE-2024-9644 Public exploit
Four-Faith F3x36 bapply.cgi Auth Bypass
The Four-Faith F3x36 router using firmware v2.0.0 is vulnerable to an authentication bypass vulnerability in the administrative web server. Authentication is not enforced on some administrative functionality when using the "bapply.cgi" endpoint instead of the…
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Critical 9.8
NETGEAR DGN setup.cgi OS Command Injection
NETGEAR DGN1000 before 1.1.00.48 is vulnerable to an authentication bypass vulnerability. A remote and unauthenticated attacker can execute arbitrary operating system commands as root by sending crafted HTTP requests to the setup.cgi endpoint. This vulnerabil…
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Critical 9.8
ProjectSend Unauthenticated Configuration Modification
ProjectSend versions prior to r1720 are affected by an improper authentication vulnerability. Remote, unauthenticated attackers can exploit this flaw by sending crafted HTTP requests to options.php, enabling unauthorized modification of the application's conf…
KEV Dec 3, 2024 -
Critical 10.0
upgrademysqlstatus in databases/views.py in CyberPanel (aka Cyber Panel) before 5b08cd6 allows remote attackers to bypa…
KEV Nov 7, 2024 -
Critical 9.8
A missing authentication for critical function in FortiManager 7.6.0, FortiManager 7.4.0 through 7.4.4, FortiManager 7.…
KEV Oct 23, 2024 -
Critical 9.3CVE-2024-6592 Public exploit
WatchGuard Firebox Single Sign-On Agent Protocol Authorization Bypass
An incorrect authorization vulnerability in the protocol communication between the WatchGuard Authentication Gateway (aka Single Sign-On Agent) on Windows and the WatchGuard Single Sign-On Client on Windows and MacOS allows an attacker with network access to …
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Critical 9.3
Expedition: Missing Authentication Leads to Admin Account Takeover
Missing authentication for a critical function in Palo Alto Networks Expedition can lead to an Expedition admin account takeover for attackers with network access to Expedition. Note: Expedition is a tool aiding in configuration migration, tuning, and enrichm…
KEV Nov 7, 2024 -
Critical 9.8CVE-2024-31218 Public exploit
Missing Authentication for Critical Function in Webhood backend
Webhood is a self-hosted URL scanner used analyzing phishing and malicious sites. Webhood's backend container images in versions 0.9.0 and earlier are subject to Missing Authentication for Critical Function vulnerability. This vulnerability allows an unauthen…
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Critical 10.0CVE-2024-24578 Public exploit
RaspberryMatic Unauthenticated Remote Code Execution vulnerability through HMServer File Upload
RaspberryMatic is an open-source operating system for HomeMatic internet-of-things devices. RaspberryMatic / OCCU prior to version 3.75.6.20240316 contains a unauthenticated remote code execution (RCE) vulnerability, caused by multiple issues within the Java …
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Critical 10.0CVE-2023-4699 Public exploit
Arbitrary Command Execution Vulnerability in Mitsubishi Electric proprietary protocol communication of multiple FA products
Missing Authentication for Critical Function vulnerability in Mitsubishi Electric Corporation MELSEC-F Series CPU modules, MELSEC iQ-F Series, MELSEC iQ-R series CPU modules, MELSEC iQ-R series, MELSEC iQ-L series, MELSEC Q series, MELSEC-L series, Mitsubishi…
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Critical 9.8
Cisco SPA112 2-Port Phone Adapters Remote Command Execution Vulnerability
A vulnerability in the web-based management interface of Cisco SPA112 2-Port Phone Adapters could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to a missing authentication process within t…
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Critical 9.1CVE-2023-27290 Public exploit
IBM Observability with Instana missing authentication
Docker based datastores for IBM Instana (IBM Observability with Instana 239-0 through 239-2, 241-0 through 241-2, and 243-0) do not currently require authentication. Due to this, an attacker within the network could access the datastores with read/write acces…
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Critical 9.8
TerraMaster NAS 4.2.29 and earlier allows remote attackers to discover the administrative password by sending "User-Age…
KEV Feb 10, 2023 -
Critical 9.8
Because the web management interface for Unified Intents' Unified Remote solution does not itself require authenticatio…
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Critical 9.9CVE-2022-41272 Public exploit
An unauthenticated attacker over the network can attach to an open interface exposed through JNDI by the User Defined S…
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Critical 9.8CVE-2022-45477 Public exploit
Telepad allows remote unauthenticated users to send instructions to the server to execute arbitrary code without any pr…
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Critical 9.8
Vulnerability in the Oracle Web Applications Desktop Integrator product of Oracle E-Business Suite (component: Upload).…
KEV Feb 2, 2023 -
Critical 9.8
On F5 BIG-IP 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 1…
KEV May 10, 2022 -
Critical 9.8
Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: OpenSSO Agent). Supported ve…
KEV Nov 28, 2022 -
Critical 9.8
Zoho ManageEngine ServiceDesk Plus before 11306, ServiceDesk Plus MSP before 10530, and SupportCenter Plus before 11014…
KEV Dec 1, 2021 -
Critical 9.8
UDP Technology/Geutebrück camera devices: Authentication Bypass
Multiple camera devices by UDP Technology, Geutebrück and other vendors allow unauthenticated remote access to sensitive files due to default user authentication settings. This can lead to manipulation of the device and denial of service.
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Critical 9.8
Apache Airflow: Variable Import endpoint missed authentication check
The variable import endpoint was not protected by authentication in Airflow >=2.0.0, <2.1.3. This allowed unauthenticated users to hit that endpoint to add/modify Airflow variables used in DAGs, potentially resulting in a denial of service, information disclo…
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Critical 9.8
Authentication bypass in Apache Airflow
The previous default setting for Airflow's Experimental API was to allow all API requests without authentication, but this poses security risks to users who miss this fact. From Airflow 1.10.11 the default has been changed to deny all requests by default and …
KEV Jan 18, 2022 -
Critical 10.0
SAP NetWeaver AS JAVA (LM Configuration Wizard), versions - 7.30, 7.31, 7.40, 7.50, does not perform an authentication …
KEV Nov 3, 2021 -
Critical 9.8
Improper Authentication in Apache Spark
In Apache Spark 2.4.5 and earlier, a standalone resource manager's master may be configured to require authentication (spark.authenticate) via a shared secret. When enabled, however, a specially-crafted RPC to the master can succeed in starting an application…
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Critical 9.8
SaltStack Salt Unauthenticated Remote Code Execution
An issue was discovered in SaltStack Salt before 2019.2.4 and 3000 before 3000.2. The salt-master process ClearFuncs class does not properly validate method calls. This allows a remote user to access some methods without authentication. These methods can be u…
KEV Nov 3, 2021