Common Weakness Enumeration
CWE-912
Allowed-with-ReviewHidden Functionality
Abstraction: Class · Status: Incomplete
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.
146 vulnerabilities reference this CWE, most recent first.
GCVE-1337-2026-000000000… (CVE-2026-7413)
Vulnerability from gna-1337 – Published: 2026-05-07 16:09 – Updated: 2026-05-08 22:46
VLAI
EPSS
VEX
Title
Persistent undocumented backdoor access in Yarbo robot
Summary
A hidden, persistent backdoor was found in Yarbo firmware v2.3.9 that provides remote, unauthenticated (or weakly authenticated) access to privileged functionality. The backdoor is undocumented, cannot be disabled via user-facing settings, and survives factory reset and ordinary firmware updates.
Severity
7.2 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-912 - Hidden Functionality
References
3 references
| URL | Tags |
|---|---|
| https://github.com/Bin4ry/yarbo-nat-in-my-back-yard | third-party-advisory |
| https://takeonme.org/gcves/GCVE-1337-2026-0000000… | third-party-advisory |
| https://takeonme.org/cves/cve-2026-7413/ | exploit |
Date Public
2026-05-07 16:00
Credits
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CVE-2026-41446 (GCVE-0-2026-41446)
Vulnerability from cvelistv5 – Published: 2026-04-28 21:15 – Updated: 2026-05-14 02:09
VLAI
EPSS
VEX
Title
WattBox 800 & 820 Series < 2.10.0.0 RCE via Diagnostic Endpoints
Summary
Snap One WattBox 800 and 820 series firmware versions prior to 2.10.0.0 contain undisclosed diagnostic HTTP endpoints that require only the device MAC address and service tag for authentication, both of which are printed in plaintext on the physical device label. Attackers with access to the device label or documentation containing these values can authenticate to the several endpoints and execute arbitrary commands as root on the device.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://help.snapone.com/wb-8x0-fw/Content/FW%20R… | release-notespatch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Snap One, LLC | WattBox 800 |
Affected:
0 , < 2.10.0.0
(custom)
|
|
| Snap One, LLC | WattBox 820 |
Affected:
0 , < 2.10.0.0
(custom)
|
Date Public
2026-03-19 00:00
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CVE-2026-34769 (GCVE-0-2026-34769)
Vulnerability from cvelistv5 – Published: 2026-04-03 23:33 – Updated: 2026-07-15 01:03
VLAI
EPSS
VEX
Title
Electron: Renderer command-line switch injection via undocumented commandLineSwitches webPreference
Summary
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, an undocumented commandLineSwitches webPreference allowed arbitrary switches to be appended to the renderer process command line. Apps that construct webPreferences by spreading untrusted configuration objects may inadvertently allow an attacker to inject switches that disable renderer sandboxing or web security controls. Apps are only affected if they construct webPreferences from external or untrusted input without an allowlist. Apps that use a fixed, hardcoded webPreferences object are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/electron/electron/security/adv… | x_refsource_CONFIRM |
| https://access.redhat.com/security/cve/CVE-2026-34769 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2455004 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| electron | electron |
Affected:
< 38.8.6
Affected: >= 39.0.0-alpha.1, < 39.8.0 Affected: >= 40.0.0-alpha.1, < 40.7.0 Affected: >= 41.0.0-alpha.1, < 41.0.0-beta.8 |
|
| Red Hat | Red Hat Build of Podman Desktop |
cpe:/a:redhat:podman_desktop:1 |
|
| Red Hat | Red Hat Build of Podman Desktop - Tech Preview |
cpe:/a:redhat:podman_desktop:0 |
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CVE-2026-33280 (GCVE-0-2026-33280)
Vulnerability from cvelistv5 – Published: 2026-03-27 05:25 – Updated: 2026-03-27 19:54
VLAI
EPSS
VEX
Summary
Hidden functionality issue exists in BUFFALO Wi-Fi router products, which may allow an attacker to gain access to the product’s debugging functionality, resulting in the execution of arbitrary OS commands.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-912 - Hidden functionality
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| BUFFALO INC. | BUFFALO Wi-Fi router products |
Affected:
See "References" section
|
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CVE-2026-31847 (GCVE-0-2026-31847)
Vulnerability from cvelistv5 – Published: 2026-03-23 12:07 – Updated: 2026-03-26 10:52
VLAI
EPSS
VEX
Title
Hidden Functionality Enables Remote Telnet Activation via /goform/setSysTools in Nexxt Nebula 300+
Summary
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 authenticated attacker can activate a Telnet service on port 23. This exposes a privileged diagnostic interface that is not intended for external access and can be used to interact with the underlying system.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-912 - Hidden Functionality
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Nexxt Solutions | Nebula 300+ |
Affected:
<= 12.01.01.37 , ≤ Nebula300+_v12.01.01.37
(custom)
|
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CVE-2026-7413 (GCVE-0-2026-7413)
Vulnerability from cvelistv5 – Published: 2026-05-07 16:09 – Updated: 2026-05-08 22:46
VLAI
EPSS
VEX
Title
Persistent undocumented backdoor access in Yarbo robot
Summary
A hidden, persistent backdoor was found in Yarbo firmware v2.3.9 that provides remote, unauthenticated (or weakly authenticated) access to privileged functionality. The backdoor is undocumented, cannot be disabled via user-facing settings, and survives factory reset and ordinary firmware updates.
Severity
7.2 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-912 - Hidden Functionality
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/Bin4ry/yarbo-nat-in-my-back-yard | third-party-advisory |
| https://takeonme.org/gcves/GCVE-1337-2026-0000000… | third-party-advisory |
| https://takeonme.org/cves/cve-2026-7413/ | exploit |
Date Public
2026-05-07 16:00
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CVE-2026-4769 (GCVE-0-2026-4769)
Vulnerability from cvelistv5 – Published: 2026-07-13 06:35 – Updated: 2026-07-13 14:44
VLAI
EPSS
VEX
Title
Unauthenticated Access to Internal Diagnostic Interface
Summary
Certain devices in the WAGO System I/O Field series activate an internal diagnostic capability during the initial startup sequence. This functionality is not formally documented and becomes accessible without authentication for a brief period in the early boot phase. During this window, an unauthenticated remote attacker can gain access to the internal system processes, resulting in full system compromise.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-912 - Hidden Functionality
Assigner
References
1 reference
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| WAGO | 0765-110x/0100-0000 |
Affected:
1.0.0.0 , < 1.2.1.100
(semver)
|
|
| WAGO | 0765-120x/0100-0000 |
Affected:
1.0.0.0 , < 1.2.7.100
(semver)
|
|
| WAGO | 0765-150x/0100-0000 |
Affected:
1.0.0.0 , < 1.2.7.103
(semver)
|
|
| WAGO | 0765-2101/0100-0000 |
Affected:
1.0.0.0 , < 1.2.1.102
(semver)
|
|
| WAGO | 0765-2102/0100-0000 |
Affected:
1.0.0.0 , < 1.2.5.101
(semver)
|
|
| WAGO | 0765-410x/0100-0000 |
Affected:
1.0.0.0 , < 1.2.1.100
(semver)
|
|
| WAGO | 0765-420x/0100-0000 |
Affected:
1.0.0.0 , < 1.2.7.100
(semver)
|
|
| WAGO | 0765-450x/0100-0000 |
Affected:
1.0.0.0 , < 1.2.7.103
(semver)
|
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CVE-2026-4621 (GCVE-0-2026-4621)
Vulnerability from cvelistv5 – Published: 2026-03-27 11:52 – Updated: 2026-04-10 04:13
VLAI
EPSS
VEX
Summary
Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to enable telnet via network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-912 - Hidden Functionality
Assigner
References
1 reference
Impacted products
25 products
Credits
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CVE-2026-3587 (GCVE-0-2026-3587)
Vulnerability from cvelistv5 – Published: 2026-03-23 07:49 – Updated: 2026-03-24 07:38
VLAI
EPSS
VEX
Title
Hidden CLI Function Allows Root Access
Summary
An unauthenticated remote attacker can exploit a hidden function in the CLI prompt to escape the restricted interface, leading to full compromise of the device.
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-912 - Hidden Functionality
Assigner
References
1 reference
Impacted products
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| WAGO | Lean Managed Switch 852-1812 |
Affected:
0.0.0 , < V1.2.1.S0
(semver)
|
|
| WAGO | Lean Managed Switch 852-1813 |
Affected:
0.0.0 , < V1.2.1.S0
(semver)
|
|
| WAGO | Lean Managed Switch 852-1813-000-001 |
Affected:
0.0.0 , < V1.2.3.S0
(semver)
|
|
| WAGO | Lean Managed Switch 852-1816 |
Affected:
0.0.0 , < V1.2.1.S0
(semver)
|
|
| WAGO | Industrial Managed Switch 852-303 |
Affected:
0.0.0 , < V1.2.8.S0
(semver)
|
|
| WAGO | Industrial Managed Switch 852-1305 |
Affected:
0.0.0 , < V1.2.0.S0
(semver)
|
|
| WAGO | Industrial Managed Switch 852-1305-000-001 |
Affected:
0.0.0 , < V1.2.0.S0
(semver)
|
|
| WAGO | Industrial Managed Switch 852-1505-000-001 |
Affected:
0.0.0 , < V1.2.0.S0
(semver)
|
|
| WAGO | Industrial Managed Switch 852-1505 |
Affected:
0.0.0 , < V1.1.9.S0
(semver)
|
|
| WAGO | Industrial Managed Switch 852-602 |
Affected:
0.0.0 , < V1.0.6.S0
(semver)
|
|
| WAGO | Industrial Managed Switch 852-603 |
Affected:
0.0.0 , < V1.0.6.S0
(semver)
|
|
| WAGO | Industrial Managed Switch 852-1605 |
Affected:
0.0.0 , < V1.2.5.S0
(semver)
|
|
| WAGO | Lean Managed Switch 852-1812-010-000 |
Affected:
0.0.0 , < V1.2.1.S0
(semver)
|
|
| WAGO | Lean Managed Switch 852-1813-010-000 |
Affected:
0.0.0 , < V1.2.1.S0
(semver)
|
|
| WAGO | Lean Managed Switch 852-1816-010-000 |
Affected:
0.0.0 , < V1.2.1.S0
(semver)
|
|
| WAGO | Lean Managed Switch 852-1813/010-001 |
Affected:
0.0.0 , < V1.2.1.S0
(semver)
|
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CVE-2026-1952 (GCVE-0-2026-1952)
Vulnerability from cvelistv5 – Published: 2026-04-24 06:08 – Updated: 2026-04-24 15:26
VLAI
EPSS
VEX
Title
Denial of service via the undocumented subfunction in AS320T
Summary
Delta Electronics AS320T has denial of service via the undocumented subfunction vulnerability.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-912 - Hidden Functionality
Assigner
References
1 reference
Date Public
2026-04-24 05:26
Credits
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Mitigation
Installation
Always verify the integrity of the product that is being installed.
CAPEC-133: Try All Common Switches
An attacker attempts to invoke all common switches and options in the target application for the purpose of discovering weaknesses in the target. For example, in some applications, adding a --debug switch causes debugging information to be displayed, which can sometimes reveal sensitive processing or configuration information to an attacker. This attack differs from other forms of API abuse in that the attacker is indiscriminately attempting to invoke options in the hope that one of them will work rather than specifically targeting a known option. Nonetheless, even if the attacker is familiar with the published options of a targeted application this attack method may still be fruitful as it might discover unpublicized functionality.
CAPEC-190: Reverse Engineer an Executable to Expose Assumed Hidden Functionality
An attacker analyzes a binary file or executable for the purpose of discovering the structure, function, and possibly source-code of the file by using a variety of analysis techniques to effectively determine how the software functions and operates. This type of analysis is also referred to as Reverse Code Engineering, as techniques exist for extracting source code from an executable. Several techniques are often employed for this purpose, both black box and white box. The use of computer bus analyzers and packet sniffers allows the binary to be studied at a level of interactions with its computing environment, such as a host OS, inter-process communication, and/or network communication. This type of analysis falls into the 'black box' category because it involves behavioral analysis of the software without reference to source code, object code, or protocol specifications.