CVE-2026-66890

CRITICAL 9.6

Use of Hard-coded Credentials in Digital Watchdog VMAX DVR and NVR Product Lineups

CVSS Score

9.6

EPSS Score

0.0%

EPSS Percentile

0th

The affected products use hard-coded credentials, which could allow remote access to files with root privileges where FTP is reachable.

CWE	CWE-798
Vendor	digital watchdog
Product	vmax a1 g4 dvr
Published	Sep 15, 2026

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CVSS v3 Breakdown

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

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Digital Watchdog / VMAX A1 G4 DVR

All

Digital Watchdog / VMAX IP G4 NVR

All

Digital Watchdog / VMAX A1 PLUS

All

Digital Watchdog / VA1G4 Recorder

All

Digital Watchdog / VG4 Recorder

All

References

NVD ↗ CVE.org ↗ EPSS Data ↗

digital-watchdog.com: https://digital-watchdog.com/downloads/ cisa.gov: https://www.cisa.gov/news-events/ics-advisories/icsa-26-258-01 github.com: https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-258-01.json

Credits

Scot Berner of TrustedSec reported this vulnerability to CISA.