CVE-2026-66372: CWE-337 Predictable seed in Pseudo-Random number generator (PRNG) in Digital Watchdog VMAX A1 G4 DVR
The affected products use insufficiently random values, which allows web session tokens to be predictable, bounding token entropy to the seed space.
AI Analysis
Technical Summary
The Digital Watchdog VMAX A1 G4 DVR devices use a pseudo-random number generator (PRNG) seeded with insufficiently random values, leading to predictable web session tokens. This weakness bounds the entropy of tokens to the seed space, making token prediction feasible. The vulnerability is tracked as CVE-2026-66372 and is classified under CWE-337 (Predictable Seed in PRNG). The CVSS 3.1 base score is 6.8 with attack vector as adjacent network, high attack complexity, no privileges required, no user interaction, and impacts confidentiality and integrity.
Potential Impact
An attacker with access to the adjacent network could predict web session tokens due to the predictable PRNG seed, potentially allowing unauthorized access to user sessions. This compromises confidentiality and integrity of the affected system's web sessions. There is no indication of impact on availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided. Until a patch is available, limit network access to the device and monitor for suspicious session activity.
CVE-2026-66372: CWE-337 Predictable seed in Pseudo-Random number generator (PRNG) in Digital Watchdog VMAX A1 G4 DVR
Description
The affected products use insufficiently random values, which allows web session tokens to be predictable, bounding token entropy to the seed space.
CVSS v3.1
Score 6.8medium
Affected software
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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Digital Watchdog VMAX A1 G4 DVR devices use a pseudo-random number generator (PRNG) seeded with insufficiently random values, leading to predictable web session tokens. This weakness bounds the entropy of tokens to the seed space, making token prediction feasible. The vulnerability is tracked as CVE-2026-66372 and is classified under CWE-337 (Predictable Seed in PRNG). The CVSS 3.1 base score is 6.8 with attack vector as adjacent network, high attack complexity, no privileges required, no user interaction, and impacts confidentiality and integrity.
Potential Impact
An attacker with access to the adjacent network could predict web session tokens due to the predictable PRNG seed, potentially allowing unauthorized access to user sessions. This compromises confidentiality and integrity of the affected system's web sessions. There is no indication of impact on availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided. Until a patch is available, limit network access to the device and monitor for suspicious session activity.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- icscert
- Date Reserved
- 2026-08-03T21:27:04.641Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa9aed355bf5e2cf55add05
Added to database: 09/15/2026, 20:47:15 UTC
Last enriched: 09/15/2026, 21:31:54 UTC
Last updated: 09/16/2026, 03:17:50 UTC
Views: 6
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