CVE-2026-42941
Published: 29 May 2026
Summary
CVE-2026-42941 is a high-severity Use of Default Credentials (CWE-1392) vulnerability in Macgregor Interschalt Vdr G4E Firmware. Its CVSS base score is 8.7 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Default Accounts (T1078.001); ranked at the 13.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-33395
Vulnerability details
The Danelec MacGregor Voyage Data Recorder device includes a default username and password, with no enforced password change.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Default credentials directly map to T1078.001 for initial access via valid default accounts.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Mandates replacement of default credentials during secure configuration and provisioning procedures.
Policy requires changing or avoiding default credentials during system setup and operation.
Unique identification requirement prevents use of default or shared credentials by organizational users.
Changing default authenticators prior to first use prevents use of default credentials.
Standards-compliant authentication mechanisms typically prohibit default credentials for cryptographic modules.
Consistent implementation of the strategy drives removal or mitigation of default credentials in procured systems and services.
Security functional requirements and acceptance criteria can stipulate that acquired systems must not use default credentials.
Documentation of known configuration vulnerabilities and secure setup practices reduces reliance on default credentials.