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CVE-2026-66890

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

CRITICAL
9.6
CVSS Score
Published: September 15, 2026 at 08:25 PM UTC
Updated: September 18, 2026 at 07:59 PM UTC
5 products affected across 1 vendorVmax A1-g4VMAX A1 PlusVA1G4

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Severity
CRITICAL9.6
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.6CRITICALicscert
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-798

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