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CISA advisoryVulnerabilitiesPublished September 29, 2026

Lantronix G520 Series Cellular Gateway

Updated under an hour ago ()

View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to replace software and execute arbitrary code with root privileges. The following versions of Lantronix G520 Series Cellular Gateway are affected: G520 Series 2.6.0.4R6_stable (CVE-2026-84409, CVE-2026-91191) CVSS Vendor Equipment Vulnerabilities v3 7.5 Lantronix Lantronix G520 Series Cellular Gateway Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), Improper Verification of Cryptographic Signature Background Critical Infrastructure Sectors: Transportation Systems, Energy, Water and Wastewater Systems Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + CVE-2026-84409 The device's update mechanism retrieves metadata for software updates over an unencrypted HTTP connection and stores portions of that metadata for later use. A management interface subsequently returns this stored value in a JSON response, and the web interface responsible for displaying update information inserts that value directly into the page as HTML. This behavior allows attacker‑controlled metadata to be interpret…

Tags
CISA, ICS
Related exam domains
CISSP 4: Communication and Network Security; CISSP 7: Security Operations; CISSP 8: Software Development Security; CISM 2: Information Security Risk Management; CISM 4: Incident Management; CISA 3: Information Systems Acquisition, Development and Implementation
Source record id
/node/25558
First seen by InfoSec Signals
10/9/2026

Source: CISA cybersecurity advisories, Cybersecurity and Infrastructure Security Agency about this source more from it

Exam domain labels come from a keyword heuristic and are study hints, not an official mapping. The summary is the publisher's own text, shortened; the linked record is authoritative.

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