VulnerabilityPublished 29 May 2026

CVE-2026-40425: Danelec MacGregor Voyage Data Recorder (VDR) G4e · Exposed Files or Directories

Affects Danelec MacGregor Voyage Data Recorder (VDR) G4eSource CVE Database V5

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Not known to be exploited · CVSS 5.7 Medium : upgrade to 5.250 when convenient.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score

5.7Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 5.250

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L

Attack Vector: Adjacent
Attack Complexity: Low
Privileges Required: High
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: Low
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Adjacent: The vulnerable component is bound to the network stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared physical (e.g., Bluetooth or IEEE 802.11) or logical (e.g., local IP subnet) network, or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN to an administrative network zone).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 29 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Danelec MacGregor Voyage Data Recorder (VDR) G4e to 5.250.

Affected software

Product	Affected	Fixed in
DanelecMacGregor Voyage Data Recorder (VDR) G4e	Affected <5.250	Fixed in 5.250

AI-suggested

If you cannot patch yet, restrict administrator access to the web interface to trusted personnel and networks only. No additional vendor-provided mitigations are currently documented.

Description

CVE-2026-40425 is a medium severity vulnerability in the Danelec MacGregor Voyage Data Recorder (VDR) G4e. The administrator account on the device's web interface can directly edit sensitive authentication-related files, which may allow changing the root password. This vulnerability could lead to unauthorized access or control escalation if exploited. The device is not a cloud service, so remediation depends on vendor updates or manual mitigation. There are no known exploits in the wild at this time.

Impact

If exploited, this vulnerability could allow an attacker with administrator access to the web interface to change the root password by editing sensitive authentication files. This could lead to unauthorized root-level access, compromising confidentiality and potentially affecting availability. The integrity impact is rated low, indicating limited ability to modify data beyond authentication files. The vulnerability requires high privileges (administrator access) and is exploitable over an adjacent network.

Summary

This vulnerability (CVE-2026-40425) affects the Danelec MacGregor Voyage Data Recorder (VDR) G4e. It involves CWE-552, where the administrator account on the web interface can directly modify sensitive files related to authentication, potentially allowing changes to the root password. The CVSS 3.1 base score is 5.7 (medium), with attack vector as adjacent network, low attack complexity, high privileges required, no user interaction, unchanged scope, high confidentiality impact, low integrity impact, and low availability impact. The vulnerability was published on May 29, 2026, and no known exploits have been reported.

CWE-552Files or Directories Accessible to External Parties (opens in a new tab)
Base weaknessOWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product makes files or directories accessible to unauthorized actors, even though they should not be.
Implementation · System Configuration · Operation
When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to disable public access.
OWASP Cheat Sheets
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V12.5.1 (opens in a new tab)
V12.4.1 (opens in a new tab)
V8.3.8 (opens in a new tab)
Attack patterns
Collect Data from Common Resource Locations (opens in a new tab)
Probe System Files (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 5 Jun 2026, 21:20 UTC

WeaknessesCWE-552

Technical details

References

Community reviews

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