Navtor NavBox up to 4.16.1.20 SOAP Interface hard-coded credentials

Summaryinfo

A vulnerability has been found in Navtor NavBox up to 4.16.1.20 and classified as critical. Affected by this issue is some unknown functionality of the component SOAP Interface. This manipulation causes hard-coded credentials. This vulnerability appears as CVE-2026-21404. The attack requires local access. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Navtor NavBox up to 4.16.1.20. It has been declared as critical. Affected by this vulnerability is an unknown part of the component SOAP Interface. The manipulation with an unknown input leads to a hard-coded credentials vulnerability. The CWE definition for the vulnerability is CWE-798. The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

NAVTOR NavBox through version 4.16.1.20 contains hard-coded credentials within its Windows Communication Foundation (SOAP) implementation. If the SOAP functionality is enabled, a local attacker can extract credentials to bypass the intended transfer workflow. Successful authentication against the SOAP interface grants access to privileged WCF methods, enabling an attacker to write or overwrite files within application-defined paths.

The weakness was presented with Cydome Security Ltd as icsa-26-155-01. The advisory is shared at cisa.gov. This vulnerability is known as CVE-2026-21404 since 01/28/2026. The exploitation appears to be difficult. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1110.001 for this issue.

Upgrading to version 4.17.2.6 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-34321). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Navtor

Name

• NavBox

Version

• 4.16.1.0
• 4.16.1.1
• 4.16.1.2
• 4.16.1.3
• 4.16.1.4
• 4.16.1.5
• 4.16.1.6
• 4.16.1.7
• 4.16.1.8
• 4.16.1.9
• 4.16.1.10
• 4.16.1.11
• 4.16.1.12
• 4.16.1.13
• 4.16.1.14
• 4.16.1.15
• 4.16.1.16
• 4.16.1.17
• 4.16.1.18
• 4.16.1.19
• 4.16.1.20

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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