---
id: CVE-2026-66372
title: >-
  The affected products use insufficiently random values, which allows web
  session tokens to be predictable, bounding token entropy to the seed space.
summary: >-
  The affected products use insufficiently random values, which allows web
  session tokens to be predictable, bounding token entropy to the seed space.
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-337
vendor: Digital Watchdog
product: VMAX A1 G4 DVR
affected:
  - vmax_a1_g4_dvr All
  - vmax_ip_g4_nvr All
  - vmax_a1_plus All
  - va1g4_recorder All
  - vg4_recorder All
published: '2026-09-15'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T19:39:09.490'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-66372'
references:
  - url: 'https://digital-watchdog.com/downloads/'
    label: ics-cert@hq.dhs.gov
  - url: >-
      https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-258-01.json
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.cisa.gov/news-events/ics-advisories/icsa-26-258-01'
    label: ics-cert@hq.dhs.gov
tags:
  - nvd
  - cve.org
epss: 0.00196
epssPercentile: 0.09634
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-17T18:46:28.675099Z'
ingestedAt: '2026-09-15T21:44:50.636Z'
---

## Overview

The affected products use insufficiently random values, which allows web session tokens to be predictable, bounding token entropy to the seed space.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.