What is CVE-2026-40425?

CVE-2026-40425 is a medium-severity vulnerability in Danelec Macgregor Voyage Data Recorder (Vdr) G4e, classified under Files or Directories Accessible to External Parties. CVSS score: 5.7/10. Published 2026-05-29.

How severe is CVE-2026-40425?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Vulnerability in Danelec Macgregor Voyage Data Recorder (Vdr) G4e

CVE-2026-40425

The administrator account for the Danelec MacGregor Voyage Data Recorder web interface can directly edit sensitive files related to authentication, potentially changing the root password.

Published 2026-05-29 · last modified 2026-07-20.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L.

EPSS exploit prediction

EPSS: 0.006 (46.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002

Affected products

Weakness classification (CWE)

CWE-552 — Files or Directories Accessible to External Parties

References

www.danelec.com/contact (Product)
www.cisa.gov/news-events/ics-advisories/icsa-26-148-01 (US Government Resource, Third Party Advisory)
github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-148-01.js… (Issue Tracking)

Frequently asked questions

What is CVE-2026-40425?: CVE-2026-40425 is a medium-severity vulnerability in Danelec Macgregor Voyage Data Recorder (Vdr) G4e, classified under Files or Directories Accessible to External Parties. CVSS score: 5.7/10. Published 2026-05-29.
How severe is CVE-2026-40425?: Medium severity. CVSS v3 base score is 5.7 out of 10.