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CVE-2026-66890— Use of Hard-coded Credentials 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.

受影响的产品使用了硬编码的凭据，这可能导致在 FTP 可达的情况下，攻击者能够以 root 权限远程访问文件。

CVSS 9.6 · Critical
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I. Basic Information for CVE-2026-66890

Vulnerability Information
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Vulnerability Title
Use of Hard-coded Credentials in Digital Watchdog VMAX DVR and NVR Product Lineups
Source: CVE Program / CVE List V5
Vulnerability Description
The affected products use hard-coded credentials, which could allow remote access to files with root privileges where FTP is reachable.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的凭证
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-2026-66890

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III. Intelligence Information for CVE-2026-66890

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Vendor Advisories for CVE-2026-66890 (2)

Other References for CVE-2026-66890 (1)

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

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-2026-66372 6.8 MEDIUM Predictable Seed in Pseudo-Random Number Generator (PRNG) in Digital Watchdog VMAX DVR and
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-798

V. Comments for CVE-2026-66890

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