CVE-2026-42941: The Danelec MacGregor Voyage Data Recorder device includes a default username and password, with no enforced

Q: How do I fix CVE-2026-42941?

interschalt vdr g4e firmware: upgrade to 5.250. Exact commands for each OS are on this page.

Q: Is CVE-2026-42941 being exploited?

CVE-2026-42941 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-2026-42941 affect?

CVE-2026-42941 affects interschalt vdr g4e firmware. Severity is high (CVSS 8.3). The Danelec MacGregor Voyage Data Recorder device includes a default username and password, with no enforced password change.

Routine

HIGH 8.3UPGRADE

CVE-2026-42941 is a high-severity flaw (CVSS 8.3) affecting interschalt vdr g4e firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Danelec MacGregor Voyage Data Recorder device includes a default username and password, with no enforced password change.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.3 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-1392
Published	2026-05-29
Last modified	2026-07-21

Publisher (CNA): ICS-CERT · Vendor: macgregor

Last updated 2026-07-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-29 19:16 UTCPublished CVE record published
2026-07-21 18:10 UTCUpdated Record last modified

macgregor interschalt vdr g4e firmware UPGRADE

Affected: < 5.250

Fixed in: 5.250

Safe to downgrade to: no unaffected older release

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-2026-42941?

interschalt vdr g4e firmware: upgrade to 5.250. Exact commands for each OS are on this page.

Is CVE-2026-42941 being exploited?

CVE-2026-42941 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-2026-42941 affect?

CVE-2026-42941 affects interschalt vdr g4e firmware. Severity is high (CVSS 8.3). The Danelec MacGregor Voyage Data Recorder device includes a default username and password, with no enforced password change.

How urgent is CVE-2026-42941?

Priority 32/100. High severity

Related CVEs

CVE-2026-44611 MEDIUM 5.4 UPGRADE Danelec MacGregor Voyage Data Recorder passwords are stored with a hashing method which limits password length
CVE-2026-42929 HIGH 8.3 UPGRADE Danelec MacGregor Voyage Data Recorder includes default accounts with hard-coded credentials.
CVE-2026-42951 MEDIUM 5.4 UPGRADE An authenticated user can download a backup of the Danelec MacGregor Voyage Data Recorder device which inclu
CVE-2026-40425 MEDIUM 5.7 UPGRADE The administrator account for the Danelec MacGregor Voyage Data Recorder web interface can directly edit sens

References

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