CVE-2026-2752: Navtor NavBox allows information disclosure via the /api/ais-data endpoint

Q: How do I fix CVE-2026-2752?

navbox firmware: upgrade to 4.16.2.4. Exact commands for each OS are on this page.

Q: Is CVE-2026-2752 being exploited?

CVE-2026-2752 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-2752 affect?

CVE-2026-2752 affects navbox firmware. Severity is medium (CVSS 5.3). Navtor NavBox allows information disclosure via the /api/ais-data endpoint. A remote, unauthenticated attacker can send crafted requests to trigger an unhandled exception, causing the server to return verbose .NET stack traces. These error

Q: How urgent is CVE-2026-2752?

Priority 29/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2026-2752 is a medium-severity flaw (CVSS 5.3) affecting navbox firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Navtor NavBox allows information disclosure via the /api/ais-data endpoint. A remote, unauthenticated attacker can send crafted requests to trigger an unhandled exception, causing the server to return verbose .NET stack traces. These error messages expose internal class names, method calls, and third-party library references (e.g., System.Data.SQLite), which may assist attackers in mapping the application's internal structure.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-209
Published	2026-03-06
Last modified	2026-06-17

Publisher (CNA): MHV · Vendor: navtor

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-06 15:16 UTCPublished CVE record published
2026-06-17 10:31 UTCUpdated Record last modified

navtor navbox firmware UPGRADE

Affected: >= 4.12.0.3 and < 4.16.2.4

Fixed in: 4.16.2.4

Safe to downgrade to: a release before 4.12.0.3

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-2752?

navbox firmware: upgrade to 4.16.2.4. Exact commands for each OS are on this page.

Is CVE-2026-2752 being exploited?

CVE-2026-2752 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-2752 affect?

CVE-2026-2752 affects navbox firmware. Severity is medium (CVSS 5.3). Navtor NavBox allows information disclosure via the /api/ais-data endpoint. A remote, unauthenticated attacker can send crafted requests to trigger an unhandled exception, causing the server to return verbose .NET stack traces. These error

How urgent is CVE-2026-2752?

Priority 29/100. Remotely exploitable, no login, no user action

Software pages

SQLite vulnerabilities

Related CVEs

CVE-2026-21404 MEDIUM 6.3 UPGRADE NAVTOR NavBox through version 4.16.1.20 contains hard-coded credentials within its Windows Communication Found
CVE-2026-2754 HIGH 7.5 UPGRADE Navtor NavBox exposes sensitive configuration and operational data due to missing authentication on HTTP API e
CVE-2026-2753 HIGH 7.5 UPGRADE An Absolute Path Traversal vulnerability exists in Navtor NavBox

References

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