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Fencer Vulns
critical 9.6

CVE-2026-66887 json

Missing Authorization in Digital Watchdog VMAX DVR and NVR Product Lineups

published 2026-09-15 54 d ago modified 2026-09-18 51 d ago also EUVD-2026-79952

cvss
9.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits
0
none known

Summary

The affected products are missing authorization on state-changing CGIs and session checks are not performed.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-258-01 updated cvss 9.6

Digital Watchdog VMAX DVR and NVR Product Lineups

  • Digital Watchdog VA1G4 Recorder Digital Watchdog VG4 Recorder Digital Watchdog VMAX A1 G4 DVRs Digital Watchdog VMAX A1 PLUS Digital Watchdog VMAX IP G4 NVRs
    affected: mitigation “Digital Watchdog has released updated firmware for the affected products. Users should download and install the updated firmware for their model at https://digital-watchdog.com/downloads/.” digital-watchdog.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
53 d ago

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.6 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CNA 4.0 9.4 CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CNA 4.0 9.4 CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Digital Watchdog VMAX A1 G4 DVR
  • Digital Watchdog VMAX IP G4 NVR
  • Digital Watchdog VMAX A1 PLUS
  • Digital Watchdog VA1G4 Recorder
  • Digital Watchdog VG4 Recorder

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.