# CVE-2026-42929: MacGregor Voyage Data Recorder (VDR) G4e Use of Hard-coded Credentials

> Attackers can access the MacGregor Voyage Data Recorder using hard-coded default credentials, potentially compromising maritime operational data.

- **Severity:** High 8.7 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 May 2026
- **Updated:** 29 May 2026
- **Also known as:** GHSA-84hh-5gvq-fvr4

## What is CVE-2026-42929?

CVE-2026-42929 is a high-severity vulnerability in Danelec MacGregor Voyage Data Recorder (VDR) G4e, published on 29 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Danelec MacGregor Voyage Data Recorder
includes default accounts with hard-coded credentials.

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2026-42929?

It affects 1 product.


Products: Macgregor Interschalt Vdr G4e Firmware.

## How do I fix CVE-2026-42929?

No fix has been published for CVE-2026-42929 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-42929 being exploited?

There is no known exploitation of CVE-2026-42929 in the wild and no public exploit code.

## Other vulnerabilities in Danelec MacGregor Voyage Data Recorder (VDR) G4e

- [CVE-2026-42941](https://insights.sbomify.com/CVE-2026-42941/): MacGregor Voyage Data Recorder (VDR) G4e Use of Default Credentials (high 8.7)
- [CVE-2026-40425](https://insights.sbomify.com/CVE-2026-40425/): MacGregor Voyage Data Recorder (VDR) G4e Files or Directories Accessible to External Parties (medium 6.9)
- [CVE-2026-42951](https://insights.sbomify.com/CVE-2026-42951/): MacGregor Voyage Data Recorder (VDR) G4e Insufficiently Protected Credentials (medium 5.9)
- [CVE-2026-44611](https://insights.sbomify.com/CVE-2026-44611/): MacGregor Voyage Data Recorder (VDR) G4e Use of Password Hash With Insufficient Computational Effort (medium 5.9)
- [CVE-2016-9339](https://insights.sbomify.com/CVE-2016-9339/): Path traversal in INTERSCHALT VDR G4e 5.220 and prior (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-42929 and fix it if it is affected.

What it is: CVE-2026-42929 is a high-severity vulnerability in Danelec MacGregor Voyage Data Recorder (VDR) G4e, published on 29 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-42929 in the wild and no public exploit code.

Affected product: Danelec MacGregor Voyage Data Recorder (VDR) G4e. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-42929/ (Markdown: https://insights.sbomify.com/CVE-2026-42929/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-42929
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-42929
- OSV: https://osv.dev/vulnerability/CVE-2026-42929

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-42929/
Summaries are generated and may contain mistakes; the official description above is the record.