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

Quick assessment

Affected
Digital Watchdog VMAX A1 G4 DVR
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

这段描述涉及信息安全领域的技术细节，核心在于“熵”和“种子空间”的概念。 原文：The affected products use insufficiently random values, which allows web session tokens to be predictable, bounding token entropy to the seed space. 翻译建议： > 受影响的产品使用了随机性不足的值，导致 Web 会话令牌变得可预测，使得令牌的熵被限制在种子空间内。 术语解析（供参考）： I

CVSS 6.8 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-66372

Vulnerability Information
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Vulnerability Title
Predictable Seed in Pseudo-Random Number Generator (PRNG) in Digital Watchdog VMAX DVR and NVR Product Lineups
Source: CVE Program / CVE List V5
Vulnerability Description
The affected products use insufficiently random values, which allows web session tokens to be predictable, bounding token entropy to the seed space.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
PRNG中使用可预测种子
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
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 -

II. Public POCs for CVE-2026-66372

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III. Intelligence Information for CVE-2026-66372

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Vendor Advisories for CVE-2026-66372 (2)

Other References for CVE-2026-66372 (1)

Same Patch Batch · Digital Watchdog · 2026-09-15 · 6 CVEs total

CVE-2026-66890 9.6 CRITICAL Use of Hard-coded Credentials in Digital Watchdog VMAX DVR and NVR Product Lineups
CVE-2026-66887 9.6 CRITICAL Missing Authorization in Digital Watchdog VMAX DVR and NVR Product Lineups
CVE-2026-68070 8.8 HIGH Missing Authentication for Critical Function in Digital Watchdog VMAX DVR and NVR Product
CVE-2026-68950 8.8 HIGH Use of Hard-coded Credentials in Digital Watchdog VMAX DVR and NVR Product Lineups
CVE-2026-68953 6.5 MEDIUM Missing Authentication for Critical Function in Digital Watchdog VMAX DVR and NVR Product

IV. Related Vulnerabilities

Same product: VMAX A1 G4 DVR
Same vendor: Digital Watchdog
Same weakness: CWE-337

V. Comments for CVE-2026-66372

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