Atomicorp WAF Research Note: CVE-2026-19188

Haiwell IoT Cloud HMI Gateway OS Command Injection

CVE Details

• Already protected by existing Atomicorp WAF rules
• Protection status: Understanding Atomicorp WAF Protection Status
• CVE: CVE-2026-19188
• Name: Haiwell IoT Cloud HMI Gateway OS Command Injection
• Severity: Critical
• CVSS: 10.0 (v4.0) (Critical)
• CVSS version: 4.0
• CVSS source: icscert CNA
• CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
  • Attack vector: Network
  • Attack complexity: Low
  • Attack requirements: None
  • Privileges required: None
  • User interaction: None
  • Vulnerable-system confidentiality: High
  • Vulnerable-system integrity: High
  • Vulnerable-system availability: High
  • Subsequent-system confidentiality: High
  • Subsequent-system integrity: High
  • Subsequent-system availability: High
  • Scope: X
• CWE: CWE-78 — Improper Neutralization of Special Elements used in an OS Command (‘OS Command Injection’)
• Related CAPEC attack patterns (via MITRE CWE relationships): CAPEC-108 (opens in a new tab) , CAPEC-15 (opens in a new tab) , CAPEC-43 (opens in a new tab) , CAPEC-6 (opens in a new tab) , CAPEC-88 (opens in a new tab)
• Vendor: Haiwell
• Vulnerable product: Haiwell IoT Cloud HMI Gateway
• CVE published: 2026-08-14
• CVE last modified: 2026-09-08
• EPSS: 0.0193; 78.9th percentile (FIRST (opens in a new tab) )
• Latest Update: 2026-09-06
• Selected Rule IDs observed: 340014 , 340023 , 340029 , 344360 , 344361 , 344363 , 344364 , 344366 , 344370 , 393655
• Matching rules: 10; rules with blocking actions: 10
• Would-block Rule IDs: 340014 , 340023 , 340029 , 344360 , 344361 , 344363 , 344364 , 344366 , 344370 , 393655
• Request surfaces inspected: JSON request data, Request URI, Request argument names, Request arguments, Request cookies, SOAP request data, XML request data

Vulnerability Description

A critical OS command injection vulnerability has been identified in the Haiwell IoT Cloud HMI Gateway product. The vulnerability exists in the Net Check feature accessible via the /setting endpoint. The cmdPing Socket.io event fails to properly sanitize user-supplied input before passing it to the underlying operating system, allowing an attacker to inject and execute arbitrary OS commands with root privileges.

Recommended Actions

1. Maintain the observed Atomicorp protections. Keep your Atomicorp commercial rules current and confirm that the selected observed rules (340014 , 340023 , 340029 , 344360 , 344361 , 344363 , 344364 , 344366 , 344370 , 393655 ) have not been locally disabled. Atomicorp commercial rules are enabled by default. If you use Atomic WAF, review the applicable policy and rule settings.

2. Apply the vendor’s remediation. WAF protection is defense in depth and does not replace upgrading or following the affected vendor’s guidance.

   • Affected versions: Haiwell Haiwell IoT Cloud HMI Gateway version 3.40.1.12.
   • Versions reported unaffected: Haiwell Haiwell IoT Cloud HMI Gateway version 3.50.1.19.
   • CNA guidance source: icscert (opens in a new tab)
   • Vendor recommendation: Haiwell has addressed the issue in patch version number Scada-v3.50.1.19, which is available for download on their website:  https://en.haiwell.com/app/system/entrance.php?m=include&c=access&a=dodown&lang=en&id=361 (opens in a new tab)

3. Validate after changes. Confirm rule updates are current, review WAF events for the affected application, and test application behavior after vendor upgrades, mitigations, or local policy changes.

Research Notes

Atomicorp WAF protections are designed around attack techniques and exploit behaviors, allowing existing protections to apply across multiple vulnerabilities without requiring a unique rule for every CVE.

Public Vulnerability References

• NVD (opens in a new tab)
• CVE Record (opens in a new tab)
• CVE authority reference: https://en.haiwell.com/app/system/entrance.php?m=include&c=access&a=dodown&lang=en&id=361 (opens in a new tab)
• CVE authority reference: https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-225-02.json (opens in a new tab)
• CVE authority reference: https://www.cisa.gov/news-events/ics-advisories/icsa-26-225-02 (opens in a new tab)

Test or Research Source

• Source: Atomicorp AI Research Framework
• Tags: cve, derived, rce, waf-probe

Research Note Context

This research note documents exploit-technique analysis associated with this vulnerability and references Atomicorp WAF protections observed during engineering review, testing, or validation activities.

Atomicorp security controls are generally designed to identify and mitigate attack techniques and exploit behaviors rather than individual CVE identifiers. As a result, protections developed for one vulnerability may also apply to related attack variants and future vulnerabilities using similar techniques.

Learn More

Atomicorp develops commercially supported security technologies for web applications, servers, endpoints, workloads, and legacy enterprise platforms.

Organizations interested in protecting systems against exploit techniques associated with vulnerabilities such as this one can learn more about:

• Atomic ModSecurity Rules: commercially maintained WAF rules for ModSecurity deployments, including protections for web attacks, bots, scanners, malware, exploitation attempts, and emerging vulnerability classes.
• Atomic WAF: an enterprise web application firewall with Atomicorp rules, centralized management, reporting, authentication controls, and operational tooling.
• Atomic ModSecurity Integrator: a special licensing option for MSPs, MSSPs, OEMs, VARs, reverse proxy providers, and other integrators who want to incorporate Atomicorp ModSecurity rule technology into their own products or services.
• Atomic OSSEC: an enterprise OSSEC-based intrusion detection, compliance, and security monitoring platform.
• Atomic Protector: workload protection for Linux, web, cloud, data center, and hybrid environments.

For additional information, product evaluations, or technical discussions, visit https://www.atomicorp.com/ or https://modsecurity.io/ (opens in a new tab) .