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CVE-2026-2754 Navtor CVE debrief

CVE-2026-2754 is a HIGH-severity vulnerability in Navtor NavBox, a navigation system used in maritime applications. The vulnerability has a CVSS score of 7.5 and was published on March 6, 2026. The issue arises from missing authentication on HTTP API endpoints, allowing unauthenticated remote attackers with network access to the device to execute HTTP GET requests to TCP port 8080. This can lead to the retrieval of internal network parameters, including ECDIS & OT Information, device identifiers, and service status logs.

Vendor
Navtor
Product
NavBox
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-03-06
Original CVE updated
2026-06-05
Advisory published
2026-03-06
Advisory updated
2026-06-05

Who should care

Organizations using Navtor NavBox, particularly in maritime industries, should be aware of this vulnerability. The lack of authentication on HTTP API endpoints poses a significant risk, as attackers can exploit this to gain sensitive information about the device and its network.

Technical summary

The vulnerability is caused by the absence of authentication mechanisms for HTTP API endpoints in Navtor NavBox. Specifically, an unauthenticated remote attacker can send HTTP GET requests to TCP port 8080 to retrieve sensitive data. The affected versions are NavBox firmware versions up to 4.16.2.4, with the specific vulnerable version being 4.12.0.3.

Defensive priority

High

Recommended defensive actions

  • Apply patches or updates provided by the vendor to enable authentication for HTTP API endpoints.
  • Restrict access to TCP port 8080 to only trusted networks or systems.
  • Monitor NavBox systems for any suspicious activity, especially unauthorized access attempts.

Evidence notes

The CVE record and NVD details confirm the vulnerability's existence and provide technical specifics. Additional information can be found in the vendor's advisory and third-party vulnerability reports (see resource links).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-2754 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-2754

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-2754 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-2754

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://cydome.io/vulnerability-advisory-cve-2026-2754-in-navtor-navbox-version-4-12-0-3

    56a186b1-7f5e-4314-ba38-38d5499fccfd - Third Party Advisory

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://www.navtor.com/navtor-vendor-statement

    56a186b1-7f5e-4314-ba38-38d5499fccfd - Vendor Advisory

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.