Vulnerability-Lookup

GHSA-32J5-669H-CW7P

Vulnerability from github – Published: 2026-09-30 00:32 – Updated: 2026-09-30 00:32

Details

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 interpreted as script content. In addition, the same authenticated origin provides an interface capable of executing system‑level commands with root privileges. An attacker able to influence update metadata could exploit these conditions to execute arbitrary code within the administrative context of the device.

Severity

7.5 (High)


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

7.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-84409"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-29T22:19:01Z",
    "severity": "HIGH"
  },
  "details": "The device\u0027s 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\u2011controlled metadata to be interpreted as script content. In addition, the same authenticated origin provides an interface capable of executing system\u2011level commands with root privileges. An attacker able to influence update metadata could exploit these conditions to execute arbitrary code within the administrative context of the device.",
  "id": "GHSA-32j5-669h-cw7p",
  "modified": "2026-09-30T00:32:29Z",
  "published": "2026-09-30T00:32:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84409"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-272-01.json"
    },
    {
      "type": "WEB",
      "url": "https://ltrxdev.atlassian.net/wiki/spaces/LTRXTS/pages/1889828865/Latest+firmware+for+the+G520+Series+G526+G526RP+G527+G528"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-272-01"
    },
    {
      "type": "WEB",
      "url": "https://www.lantronix.com/technical-support/security-updates/vulnerability-disclosure-policy/vulnerability-library"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-84409 (GCVE-0-2026-84409)

Vulnerability from cvelistv5 – Published: 2026-09-29 21:02 – Updated: 2026-09-29 21:02

Title

Lantronix G520 Series Cellular Gateway Cross-site Scripting

Summary

Severity

7.5 (High)


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

7.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CWE

CWE-79

Assigner

icscert icscert root Scorecard

References

4 references

URL	Tags
https://ltrxdev.atlassian.net/wiki/spaces/LTRXTS/…
https://www.lantronix.com/technical-support/secur…
https://www.cisa.gov/news-events/ics-advisories/i…
https://github.com/cisagov/CSAF/blob/develop/csaf…

Impacted products

1 product

Vendor	Product	Version
Lantronix	G520 Series	Affected: 2.6.0.4R6 stable

Credits

Ievgen Bondarenko reported this vulnerability to CISA.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "G520 Series",
          "vendor": "Lantronix",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.0.4R6 stable"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Ievgen Bondarenko reported this vulnerability to CISA."
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "The device\u0027s 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\u2011controlled metadata to be interpreted as script content. In addition, the same authenticated origin provides an interface capable of executing system\u2011level commands with root privileges. An attacker able to influence update metadata could exploit these conditions to execute arbitrary code within the administrative context of the device."
            }
          ],
          "value": "The device\u0027s 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\u2011controlled metadata to be interpreted as script content. In addition, the same authenticated origin provides an interface capable of executing system\u2011level commands with root privileges. An attacker able to influence update metadata could exploit these conditions to execute arbitrary code within the administrative context of the device."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-29T21:02:09.711Z",
        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "shortName": "icscert"
      },
      "references": [
        {
          "url": "https://ltrxdev.atlassian.net/wiki/spaces/LTRXTS/pages/1889828865/Latest+firmware+for+the+G520+Series+G526+G526RP+G527+G528"
        },
        {
          "url": "https://www.lantronix.com/technical-support/security-updates/vulnerability-disclosure-policy/vulnerability-library/"
        },
        {
          "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-272-01"
        },
        {
          "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-272-01.json"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Lantronix has addressed the reported issues with release version 2.6.0.7R6 which is available on their website.\u003cbr\u003e\u003cdiv\u003e\u003ca href=\"https://ltrxdev.atlassian.net/wiki/spaces/LTRXTS/pages/1889828865/Latest+firmware+for+the+G520+Series+G526+G526RP+G527+G528\"\u003ehttps://ltrxdev.atlassian.net/wiki/spaces/LTRXTS/pages/1889828865/Latest+firmware+for+the+G520+Series+G526+G526RP+G527+G528\u003c/a\u003e\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003e\n\u003cp\u003eFor more information, see the Lantronix Vulnerability Library.\u003cbr\u003e\u003ca href=\"https://www.lantronix.com/technical-support/security-updates/vulnerability-disclosure-policy/vulnerability-library/\"\u003ehttps://www.lantronix.com/technical-support/security-updates/vulnerability-disclosure-policy/vulnerability-library/\u003c/a\u003e\u003c/p\u003e\u003cp\u003eFor more information or technical assistance, contact Lantronix support: Support@lantronix.com\u003cbr\u003e\u003ca href=\"mailto:Support@lantronix.com\"\u003emailto:Support@lantronix.com\u003c/a\u003e\u003c/p\u003e\n\n\u003cbr\u003e\u003c/div\u003e"
            }
          ],
          "value": "Lantronix has addressed the reported issues with release version 2.6.0.7R6 which is available on their website.\n https://ltrxdev.atlassian.net/wiki/spaces/LTRXTS/pages/1889828865/Latest+firmware+for+the+G520+Series+G526+G526RP+G527+G528 \n\n\n\n\n\n\n\nFor more information, see the Lantronix Vulnerability Library.\n https://www.lantronix.com/technical-support/security-updates/vulnerability-disclosure-policy/vulnerability-library/ \n\n\n\nFor more information or technical assistance, contact Lantronix support: Support@lantronix.com\n mailto:Support@lantronix.com"
        }
      ],
      "source": {
        "advisory": "ICSA-26-272-01",
        "discovery": "EXTERNAL"
      },
      "title": "Lantronix G520 Series Cellular Gateway Cross-site Scripting",
      "x_generator": {
        "engine": "Vulnogram 1.0.5"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
    "assignerShortName": "icscert",
    "cveId": "CVE-2026-84409",
    "datePublished": "2026-09-29T21:02:09.711Z",
    "dateReserved": "2026-09-17T19:24:31.388Z",
    "dateUpdated": "2026-09-29T21:02:09.711Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-32J5-669H-CW7P

CVE-2026-84409 (GCVE-0-2026-84409)

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