Hi Led Wr120 G2 FirmwareOperating system · Technostrobe

CVE-2026-5570

CRITICAL · 9.8 CVSS v3.1 Published 2026-04-05
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A vulnerability was determined in Technostrobe HI-LED-WR120-G2 5.5.0.1R6.03.30. The affected element is the function index_config of the file /LoginCB. This manipulation causes improper authentication. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

The vulnerability exists in the authentication function `index_config` within the `/LoginCB` endpoint of the Technostrobe HI-LED-WR120-G2 LED controller firmware. This improper authentication flaw allows remote attackers to bypass authentication mechanisms, likely due to broken or missing authentication checks in this specific function. The CVSS 9.8 score indicates trivial exploitation with complete compromise potential.

MitigationSince the vendor did not respond to disclosure, implement compensating controls immediately: restrict network access to the device via firewall/ACLs, place the device in an isolated network segment, and monitor for unauthorized access attempts. Contact vendor through alternate channels for firmware remediation.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Hi Led Wr120 G2 FirmwareOperating system
Affected:= 5.5.0.1r6.03.30

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the device model
    Access the device web interface or check the device label/documentation to confirm it is a Technostrobe HI-LED-WR120-G2 wireless controller
    Affected if The device is not a Technostrobe HI-LED-WR120-G2 model, then it is not affected by this specific CVE
  2. Determine the installed firmware version
    Access the device admin panel, typically found in a System, Status, or About section of the web interface, or check via CLI if available, and locate the firmware version string
    Affected if The firmware version is exactly 5.5.0.1R6.03.30, indicating the specific affected version
  3. Verify the LoginCB endpoint exists and is accessible
    Attempt to access the URL path /LoginCB on the device web interface using a web browser or HTTP client tool
    Affected if The /LoginCB endpoint responds, indicating the vulnerable component is present on the device
  4. Confirm remote web management is enabled
    Check the device network settings or security configuration panel for remote access or web interface access settings
    Affected if Remote management interfaces are enabled and accessible from untrusted networks, allowing external attackers to reach the vulnerable LoginCB endpoint

The environment is affected if the device is a Technostrobe HI-LED-WR120-G2 running firmware version 5.5.0.1R6.03.30 with the LoginCB web endpoint exposed and remote management enabled.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Since the vendor did not respond to disclosure, implement compensating controls immediately: restrict network access to the device via firewall/ACLs, place the device in an isolated network segment, and monitor for unauthorized access attempts. Contact vendor through alternate channels for firmware remediation.

Fix this in Hi Led Wr120 G2 Firmware Scoped from the published advisory
  • Consultation8.0 h
  • Implementation16.0 h
  • Testing8.0 h
  • Review / QA4.0 h
36.0 hours of engineering $6,400
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-5570 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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