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CWE-912

Hidden Functionality

23 CVEs Avg CVSS 6.8 MITRE
3
CRITICAL
8
HIGH
9
MEDIUM
3
LOW
5
POC
1
KEV

Monthly

CVE-2026-7413 HIGH This Week

Undocumented persistent backdoor in Yarbo firmware v2.3.9 grants remote privileged access that survives factory reset and firmware updates. The backdoor requires high-privilege authentication (CVSS PR:H) but provides complete system control once accessed. No public exploit identified at time of analysis, though GitHub repository reference suggests technical disclosure exists. CVSS 7.2 reflects the high-privilege requirement, but persistence across resets and undocumented nature indicate significant supply chain or insider threat risk.

Information Disclosure
NVD GitHub VulDB
CVSS 3.1
7.2
EPSS
0.0%
CVE-2026-1952 CRITICAL Act Now

Remote unauthenticated attackers can trigger denial of service in Delta Electronics AS320T industrial automation devices by invoking an undocumented subfunction. The vulnerability allows network-accessible exploitation without credentials against default configurations, potentially disrupting critical industrial control operations. Delta Electronics confirmed the flaw in PCSA-2026-00006, grouped with three other CVEs affecting the same product line.

Denial Of Service
NVD
CVSS 3.1
9.8
EPSS
0.0%
CVE-2026-4621 MEDIUM This Month

NEC Aterm wireless router series (including WG1200HP2, WG1900HP, WG1800HP3, WG1200HP4, and nine other models) contain hidden telnet functionality that can be remotely enabled by unauthenticated network attackers via unspecified means, classified as CWE-912 (Hidden Functionality). The vulnerability carries a CVSS 6.3 score reflecting network-accessible attack vector with high complexity requirements and limited confidentiality/integrity impact. No public exploit code or active exploitation via CISA KEV has been confirmed at analysis time, though the remote enablement of administrative telnet access represents a significant privilege escalation pathway for subsequent unauthorized system access.

Information Disclosure
NVD VulDB
CVSS 4.0
6.3
EPSS
0.0%
CVE-2026-33280 HIGH This Week

BUFFALO Wi-Fi router products contain hidden debugging functionality that permits authenticated attackers with high-level privileges to execute arbitrary operating system commands remotely. The vulnerability affects an unspecified range of BUFFALO's router lineup and carries a CVSS score of 7.2, requiring high privileges (PR:H) but low attack complexity over the network. No public exploit identified at time of analysis, and EPSS data is not provided in available intelligence.

Information Disclosure
NVD
CVSS 4.0
8.6
EPSS
0.1%
CVE-2026-31847 HIGH This Week

A hidden functionality vulnerability exists in the /goform/setSysTools endpoint of Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37, allowing unauthenticated remote attackers to enable a Telnet service that exposes a privileged diagnostic management interface. This significantly expands the attack surface and enables further device compromise through an unencrypted network protocol. No CVSS score, EPSS data, or KEV status is currently available, but the severity is elevated given the remote nature of exploitation and the direct access to privileged diagnostic functions.

Information Disclosure
NVD VulDB
CVSS 4.0
8.5
EPSS
0.0%
CVE-2026-3587 CRITICAL CISA Act Now

A hidden function in the CLI prompt of multiple WAGO industrial and lean managed switches allows unauthenticated remote attackers to escape the restricted interface and gain root access to the underlying Linux operating system. This results in complete device compromise with a maximum CVSS score of 10.0. The vulnerability affects over a dozen WAGO switch models used in industrial automation environments, and was disclosed by CERT@VDE.

Information Disclosure
NVD VulDB
CVSS 3.1
10.0
EPSS
0.1%
CVE-2025-48418 MEDIUM This Month

A hidden functionality vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.3, FortiAnalyzer 7.4.0 through 7.4.7, FortiAnalyzer 7.2.0 through 7.2.10, FortiAnalyzer 7.0.0 through 7.0.14, FortiAnalyzer 6.4 all versions, FortiAnalyzer Cloud 7.6.2, FortiAnalyzer Cloud 7.4.1 through 7.4.7, FortiAnalyzer Cloud 7.2.1 through 7.2.10, FortiAnalyzer Cloud 7.0.1 through 7.0.14, FortiAnalyzer Cloud 6.4 all versions, FortiManager 7.6.0 through 7.6.3, FortiManager 7.4.0 through 7.4.7, FortiManager 7.2.0 through 7.2.10, FortiManager 7.0.0 through 7.0.14, FortiManager 6.4 all versions, FortiManager Cloud 7.6.2 through 7.6.3, FortiManager Cloud 7.4.1 through 7.4.7, FortiManager Cloud 7.2.1 through 7.2.10, FortiManager Cloud 7.0.1 through 7.0.14, FortiManager Cloud 6.4 all versions may allow a remote authenticated read-only admin with CLI access to escalate their privilege via use of a hidden command. [CVSS 6.7 MEDIUM]

Fortinet Fortianalyzer Fortianalyzer Cloud Fortimanager Fortimanager Cloud
NVD VulDB
CVSS 3.1
6.7
EPSS
0.0%
CVE-2026-1741 MEDIUM This Month

The debug interface in EFM ipTIME A8004T firmware versions up to 14.18.2 contains a backdoor vulnerability in the /sess-bin/d.cgi component that can be exploited remotely through manipulation of the cmd parameter, allowing authenticated attackers with high privileges to achieve unauthorized access. Public exploit code exists for this vulnerability, and the vendor has not released a patch despite early notification of the disclosure.

Information Disclosure A8004t Firmware
NVD GitHub VulDB
CVSS 3.1
6.6
EPSS
0.1%
CVE-2025-55704 MEDIUM This Month

Hidden functionality issue exists in multiple MFPs provided by Brother Industries, Ltd., which may allow an attacker to obtain the logs of the affected product and obtain sensitive information within the logs. [CVSS 5.3 MEDIUM]

Information Disclosure
NVD
CVSS 3.1
5.3
EPSS
0.0%
CVE-2025-55075 MEDIUM This Month

Hidden functionality issue exists in WN-7D36QR and WN-7D36QR/UE. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure
NVD
CVSS 4.0
6.9
EPSS
0.0%
EPSS 0% CVSS 7.2
HIGH This Week

Undocumented persistent backdoor in Yarbo firmware v2.3.9 grants remote privileged access that survives factory reset and firmware updates. The backdoor requires high-privilege authentication (CVSS PR:H) but provides complete system control once accessed. No public exploit identified at time of analysis, though GitHub repository reference suggests technical disclosure exists. CVSS 7.2 reflects the high-privilege requirement, but persistence across resets and undocumented nature indicate significant supply chain or insider threat risk.

Information Disclosure
NVD GitHub VulDB
EPSS 0% CVSS 9.8
CRITICAL Act Now

Remote unauthenticated attackers can trigger denial of service in Delta Electronics AS320T industrial automation devices by invoking an undocumented subfunction. The vulnerability allows network-accessible exploitation without credentials against default configurations, potentially disrupting critical industrial control operations. Delta Electronics confirmed the flaw in PCSA-2026-00006, grouped with three other CVEs affecting the same product line.

Denial Of Service
NVD
EPSS 0% CVSS 6.3
MEDIUM This Month

NEC Aterm wireless router series (including WG1200HP2, WG1900HP, WG1800HP3, WG1200HP4, and nine other models) contain hidden telnet functionality that can be remotely enabled by unauthenticated network attackers via unspecified means, classified as CWE-912 (Hidden Functionality). The vulnerability carries a CVSS 6.3 score reflecting network-accessible attack vector with high complexity requirements and limited confidentiality/integrity impact. No public exploit code or active exploitation via CISA KEV has been confirmed at analysis time, though the remote enablement of administrative telnet access represents a significant privilege escalation pathway for subsequent unauthorized system access.

Information Disclosure
NVD VulDB
EPSS 0% CVSS 8.6
HIGH This Week

BUFFALO Wi-Fi router products contain hidden debugging functionality that permits authenticated attackers with high-level privileges to execute arbitrary operating system commands remotely. The vulnerability affects an unspecified range of BUFFALO's router lineup and carries a CVSS score of 7.2, requiring high privileges (PR:H) but low attack complexity over the network. No public exploit identified at time of analysis, and EPSS data is not provided in available intelligence.

Information Disclosure
NVD
EPSS 0% CVSS 8.5
HIGH This Week

A hidden functionality vulnerability exists in the /goform/setSysTools endpoint of Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37, allowing unauthenticated remote attackers to enable a Telnet service that exposes a privileged diagnostic management interface. This significantly expands the attack surface and enables further device compromise through an unencrypted network protocol. No CVSS score, EPSS data, or KEV status is currently available, but the severity is elevated given the remote nature of exploitation and the direct access to privileged diagnostic functions.

Information Disclosure
NVD VulDB
EPSS 0% CVSS 10.0
CRITICAL Act Now

A hidden function in the CLI prompt of multiple WAGO industrial and lean managed switches allows unauthenticated remote attackers to escape the restricted interface and gain root access to the underlying Linux operating system. This results in complete device compromise with a maximum CVSS score of 10.0. The vulnerability affects over a dozen WAGO switch models used in industrial automation environments, and was disclosed by CERT@VDE.

Information Disclosure
NVD VulDB
EPSS 0% CVSS 6.7
MEDIUM This Month

A hidden functionality vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.3, FortiAnalyzer 7.4.0 through 7.4.7, FortiAnalyzer 7.2.0 through 7.2.10, FortiAnalyzer 7.0.0 through 7.0.14, FortiAnalyzer 6.4 all versions, FortiAnalyzer Cloud 7.6.2, FortiAnalyzer Cloud 7.4.1 through 7.4.7, FortiAnalyzer Cloud 7.2.1 through 7.2.10, FortiAnalyzer Cloud 7.0.1 through 7.0.14, FortiAnalyzer Cloud 6.4 all versions, FortiManager 7.6.0 through 7.6.3, FortiManager 7.4.0 through 7.4.7, FortiManager 7.2.0 through 7.2.10, FortiManager 7.0.0 through 7.0.14, FortiManager 6.4 all versions, FortiManager Cloud 7.6.2 through 7.6.3, FortiManager Cloud 7.4.1 through 7.4.7, FortiManager Cloud 7.2.1 through 7.2.10, FortiManager Cloud 7.0.1 through 7.0.14, FortiManager Cloud 6.4 all versions may allow a remote authenticated read-only admin with CLI access to escalate their privilege via use of a hidden command. [CVSS 6.7 MEDIUM]

Fortinet Fortianalyzer Fortianalyzer Cloud +2
NVD VulDB
EPSS 0% CVSS 6.6
MEDIUM This Month

The debug interface in EFM ipTIME A8004T firmware versions up to 14.18.2 contains a backdoor vulnerability in the /sess-bin/d.cgi component that can be exploited remotely through manipulation of the cmd parameter, allowing authenticated attackers with high privileges to achieve unauthorized access. Public exploit code exists for this vulnerability, and the vendor has not released a patch despite early notification of the disclosure.

Information Disclosure A8004t Firmware
NVD GitHub VulDB
EPSS 0% CVSS 5.3
MEDIUM This Month

Hidden functionality issue exists in multiple MFPs provided by Brother Industries, Ltd., which may allow an attacker to obtain the logs of the affected product and obtain sensitive information within the logs. [CVSS 5.3 MEDIUM]

Information Disclosure
NVD
EPSS 0% CVSS 6.9
MEDIUM This Month

Hidden functionality issue exists in WN-7D36QR and WN-7D36QR/UE. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure
NVD

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