What’s Vulnerable › Vulnerabilities

CVE-2026-66372: Predictable Seed in Pseudo-Random Number Generator (PRNG) in Digital Watchdog VMAX DVR and NVR Product Lineups

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-15 · updated 2026-09-18
• Weakness: CWE-337

Description

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

Affected products

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

References

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

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