VYPR

CWE-912

Hidden Functionality

ClassIncomplete

Description

The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators.

Hidden functionality can take many forms, such as intentionally malicious code, "Easter Eggs" that contain extraneous functionality such as games, developer-friendly shortcuts that reduce maintenance or support costs such as hard-coded accounts, etc. From a security perspective, even when the functionality is not intentionally malicious or damaging, it can increase the product's attack surface and expose additional weaknesses beyond what is already exposed by the intended functionality. Even if it is not easily accessible, the hidden functionality could be useful for attacks that modify the control flow of the application.

Hierarchy (View 1000)

Parents

Related attack patterns (CAPEC)

CAPEC-133 · CAPEC-190

CVEs mapped to this weakness (86)

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  • CVE-2022-46996CriDec 14, 2022
    risk 0.64cvss 9.8epss 0.01

    vSphere_selfuse commit 2a9fe074a64f6a0dd8ac02f21e2f10d66cac5749 was discovered to contain a code execution backdoor via the request package. This vulnerability allows attackers to access sensitive user information and digital currency keys, as well as escalate privileges.

  • CVE-2022-3203CriOct 21, 2022
    risk 0.64cvss 9.8epss 0.01

    On ORing net IAP-420(+) with FW version 2.0m a telnet server is enabled by default and cannot permanently be disabled. You can connect to the device via LAN or WiFi with hardcoded credentials and get an administrative shell. These credentials are reset to defaults with every…

  • CVE-2021-43987CriDec 23, 2021
    risk 0.64cvss 9.8epss 0.01

    An additional, nondocumented administrative account exists in mySCADA myPRO Versions 8.20.0 and prior that is not exposed through the web interface, which cannot be deleted or changed through the regular web interface.

  • CVE-2020-12504CriOct 15, 2020
    risk 0.64cvss 9.8epss 0.03

    Improper Authorization vulnerability of Pepperl+Fuchs P+F Comtrol RocketLinx ES7510-XT, ES8509-XT, ES8510-XT, ES9528-XTv2, ES7506, ES7510, ES7528, ES8508, ES8508F, ES8510, ES8510-XTE, ES9528/ES9528-XT (all versions) and ICRL-M-8RJ45/4SFP-G-DIN, ICRL-M-16RJ45/4CP-G-DIN FW 1.2.3…

  • CVE-2020-16204CriSep 1, 2020
    risk 0.64cvss 9.8epss 0.05

    The affected product is vulnerable due to an undocumented interface found on the device, which may allow an attacker to execute commands as root on the device on the N-Tron 702-W / 702M12-W (all versions).

  • CVE-2025-11544CriDec 22, 2025
    risk 0.62cvss epss 0.00

    Improper Validation of Integrity Check Value vulnerability in Sharp Display Solutions projectors allows a attacker may create and run unauthorized firmware.

  • CVE-2020-14487CriJul 29, 2020
    risk 0.61cvss 9.4epss 0.02

    OpenClinic GA 5.09.02 contains a hidden default user account that may be accessed if an administrator has not expressly turned off this account, which may allow an attacker to login and execute arbitrary commands.

  • CVE-2026-30704CriMar 18, 2026
    risk 0.59cvss 9.1epss 0.00

    The WiFi Extender WDR201A (HW V2.1, FW LFMZX28040922V1.02) exposes an unprotected UART interface through accessible hardware pads on the PCB

  • CVE-2024-10773CriDec 6, 2024
    risk 0.59cvss 9.0epss 0.01

    The product is vulnerable to pass-the-hash attacks in combination with hardcoded credentials of hidden user levels. This means that an attacker can log in with the hidden user levels and gain full access to the device.

  • CVE-2024-3016CriMay 14, 2024
    risk 0.59cvss 9.1epss 0.01

    NEC Platforms DT900 and DT900S Series 5.0.0.0 – v5.3.4.4, v5.4.0.0 – v5.6.0.20 allows an attacker to access a non-documented the system settings to change settings via local network with unauthenticated user.

  • CVE-2022-3843CriFeb 16, 2023
    risk 0.59cvss 9.1epss 0.01

    In WAGO Unmanaged Switch (852-111/000-001) in firmware version 01 an undocumented configuration interface without authorization allows an remote attacker to read system information and configure a limited set of parameters.

  • CVE-2024-6045HigJun 17, 2024
    risk 0.58cvss 8.8epss 0.06

    Certain models of D-Link wireless routers contain an undisclosed factory testing backdoor. Unauthenticated attackers on the local area network can force the device to enable Telnet service by accessing a specific URL and can log in by using the administrator credentials obtained…

  • CVE-2026-31847HigMar 23, 2026
    risk 0.57cvss 8.8epss 0.00

    Hidden functionality in the /goform/setSysTools endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows remote enablement of a Telnet service. By sending a crafted POST request with parameters such as telnetManageEn=true and telnetPwd, an…

  • CVE-2025-30064HigAug 27, 2025
    risk 0.57cvss epss 0.00

    An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the "ex:action" parameter in the VerifyUserByThrustedService…

  • CVE-2024-47001HigSep 18, 2024
    risk 0.57cvss 8.8epss 0.01

    Hidden functionality issue in multiple digital video recorders provided by TAKENAKA ENGINEERING CO., LTD. allows a remote authenticated attacker to execute an arbitrary OS command on the device or alter the device settings.

  • CVE-2024-45696HigSep 16, 2024
    risk 0.57cvss 8.8epss 0.01

    Certain models of D-Link wireless routers contain hidden functionality. By sending specific packets to the web service, the attacker can forcibly enable the telnet service and log in using hard-coded credentials. The telnet service enabled through this method can only be…

  • CVE-2023-40158HigAug 23, 2023
    risk 0.57cvss 8.8epss 0.01

    Hidden functionality vulnerability in the CBC products allows a remote authenticated attacker to execute an arbitrary OS command on the device or alter its settings. As for the affected products/versions, see the detailed information provided by the vendor. Note that NR4H, NR8H,…

  • CVE-2023-25183HigMay 22, 2023
    risk 0.54cvss 8.3epss 0.01

    In Snap One OvrC Pro versions prior to 7.2, when logged into the superuser account, a new functionality appears that could allow users to execute arbitrary commands on the hub device.

  • CVE-2026-18844HigAug 11, 2026
    risk 0.53cvss 8.1epss 0.00

    The firmware of the Pulsetto Vagus Nerve Stimulator accepts several undisclosed commands over its Bluetooth Low Energy (BLE) interface. These commands are sent without authentication or encryption, and are never issued by the companion mobile application, yet are fully…

  • CVE-2025-48416HigMay 21, 2025
    risk 0.53cvss 8.1epss 0.01

    An OpenSSH daemon listens on TCP port 22. There is a hard-coded entry in the "/etc/shadow" file in the firmware image for the "root" user. However, in the default SSH configuration the "PermitRootLogin" is disabled, preventing the root user from logging in via SSH. This…