CyberSecBulletin
CVE-2026-97627NVD status: Deferred

ADX5004: Hidden Functionality

Published Updated By the CyberSecBulletin desk

CVE-2026-97627 is a high-severity hidden functionality vulnerability in ADX5004 from Atsumi Electric, with a CVSS 4.0 base score of 8.6 out of 10. It can be exploited remotely over the network by an attacker with administrator privileges, without any action from a user. The record lists version Ver.10.8.237 as the first without the flaw, so updating ADX5004 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.38% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update ADX5004 to Ver.10.8.237 or a later version.
  2. Update ADX5008 to Ver.10.8.237 or a later version.
  3. Update ADX404 to Ver.10.8.237 or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
Atsumi ElectricADX5004before Ver.10.8.237Ver.10.8.237
Atsumi ElectricADX5008before Ver.10.8.237Ver.10.8.237
Atsumi ElectricADX404before Ver.10.8.237Ver.10.8.237
Atsumi ElectricADX3004before Ver.10.8.237Ver.10.8.237
Atsumi ElectricADX3008before Ver.10.8.237Ver.10.8.237
Atsumi ElectricADX3016before Ver.10.8.237Ver.10.8.237
Atsumi ElectricADX204before Ver.10.8.237Ver.10.8.237
Atsumi ElectricADX1004all versionsNot stated
Atsumi ElectricADX1008all versionsNot stated
Atsumi ElectricADX2016all versionsNot stated

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Attack requirements
NoneThe attack does not depend on a particular deployment or configuration.
Privileges required
HighAdministrator-level access is required first.
User interaction
NoneNo action by a victim is required.
Confidentiality (vulnerable system)
HighSerious loss of confidentiality on the vulnerable system.
Integrity (vulnerable system)
HighSerious loss of integrity on the vulnerable system.
Availability (vulnerable system)
HighSerious loss of availability on the vulnerable system.
Confidentiality (other systems)
NoneNo loss of confidentiality on systems beyond the vulnerable one.
Integrity (other systems)
NoneNo loss of integrity on systems beyond the vulnerable one.
Availability (other systems)
NoneNo loss of availability on systems beyond the vulnerable one.

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. Scored by CNA (jpcert.or.jp).

Scoring systemScoreSeverityScored by
CVSS 4.08.6HighCNA (jpcert.or.jp)
CVSS 3.07.2HighCNA (jpcert.or.jp)

Official description

Hidden functionality issue exists in Multiple DVRs (Digital Video Recorders) provided by Atsumi Electric Co., Ltd. A user who can log in to the product with the administrator privilege may execute arbitrary OS commands.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Hidden Functionality

The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators.

How developers prevent this class of flaw

  • Always verify the integrity of the product that is being installed.

More Hidden Functionality vulnerabilities (CWE-912)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).

References

Recent Hidden Functionality vulnerabilities

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