Vulnerability-Lookup

CVE-2026-10831 (GCVE-0-2026-10831)

Vulnerability from cvelistv5 – Published: 2026-06-16 13:46 – Updated: 2026-06-16 15:27

Title

Improper Authorization of Break Signal Commands in Devices

Summary

A denial-of-service vulnerability exists in NPort devices because of improper access control on the command port. The command interface does not properly validate whether a sender is associated with a valid data port session before accepting break signal commands. A remote attacker with network access can send crafted requests to disrupt serial communication for an active user session.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-862 - Missing Authorization

Assigner

Moxa

References

1 reference

URL	Tags
https://www.moxa.com/en/support/product-support/s…	vendor-advisory

Impacted products

2 products

Vendor	Product	Version
Moxa	NPort 6000 Series	Affected: 1.0 , ≤ 2.3 (custom)
Moxa	CN2600 Series	Affected: 1.0 , ≤ 4.6 (custom)

Credits

Artur Witek

Show details on NVD website

JSON

To clipboard

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CERTFR-2026-AVI-0763

Vulnerability from certfr_avis - Published: 2026-06-17 - Updated: 2026-06-17

Une vulnérabilité a été découverte dans les produits Moxa. Elle permet à un attaquant de provoquer un déni de service à distance et un contournement de la politique de sécurité.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	Moxa	N/A	NPort 6000 Series versions antérieures à 2.3.9
	Moxa	N/A	CN2600 Series versions antérieures à 4.6.11

References

Title

Publication Time

FKIE_CVE-2026-10831

Vulnerability from fkie_nvd - Published: 2026-06-16 15:16 - Updated: 2026-06-17 10:12

Severity

6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:L

Summary

References

	URL	Tags
	psirt@moxa.com	https://www.moxa.com/en/support/product-support/security-advisory/mpsa-262370-cve-2026-10831-improper-authorization-vulnerability-in-serial-device-servers

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "defaultStatus": "unaffected",
          "product": "NPort 6000 Series",
          "vendor": "Moxa",
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          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
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GHSA-FXJ4-V3M4-37HJ

Vulnerability from github – Published: 2026-06-16 15:33 – Updated: 2026-06-16 15:33

Details

Severity

6.9 (Medium)


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

Show details on source website

JSON

To clipboard

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    "CVE-2026-10831"
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    "github_reviewed_at": null,
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  },
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  "id": "GHSA-fxj4-v3m4-37hj",
  "modified": "2026-06-16T15:33:51Z",
  "published": "2026-06-16T15:33:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10831"
    },
    {
      "type": "WEB",
      "url": "https://www.moxa.com/en/support/product-support/security-advisory/mpsa-262370-cve-2026-10831-improper-authorization-vulnerability-in-serial-device-servers"
    }
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  "schema_version": "1.4.0",
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      "type": "CVSS_V4"
    }
  ]
}

WID-SEC-W-2026-1973

Vulnerability from csaf_certbund - Published: 2026-06-16 22:00 - Updated: 2026-06-16 22:00

Summary

Moxa NPort: Schwachstelle ermöglicht Denial of Service

Severity

Mittel

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: Moxa NPort ist eine Produktfamilie von seriellen Geräteservern zur Integration serieller Geräte im Feld mit einem Ethernet-Netzwerk oder einer Cloud-Plattform.

Angriff: Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Moxa NPort ausnutzen, um einen Denial of Service Angriff durchzuführen.

Betroffene Betriebssysteme: - Sonstiges

CVE-2026-10831

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
Moxa NPort NPort 6000 <2.3.9 Moxa / NPort		NPort 6000 <2.3.9

References

4 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://www.moxa.com/en/support/product-support/s…	external
https://github.com/advisories/GHSA-fxj4-v3m4-37hj	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Moxa NPort ist eine Produktfamilie von seriellen Ger\u00e4teservern zur Integration serieller Ger\u00e4te im Feld mit einem Ethernet-Netzwerk oder einer Cloud-Plattform.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Moxa NPort ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Sonstiges",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-1973 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1973.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1973 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1973"
      },
      {
        "category": "external",
        "summary": "Moxa Security Advisories vom 2026-06-16",
        "url": "https://www.moxa.com/en/support/product-support/security-advisory/mpsa-262370-cve-2026-10831-improper-authorization-vulnerability-in-serial-device-servers"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-fxj4-v3m4-37hj vom 2026-06-16",
        "url": "https://github.com/advisories/GHSA-fxj4-v3m4-37hj"
      }
    ],
    "source_lang": "en-US",
    "title": "Moxa NPort: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2026-06-16T22:00:00.000+00:00",
      "generator": {
        "date": "2026-06-17T10:24:50.728+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-1973",
      "initial_release_date": "2026-06-16T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-06-16T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "NPort 6000 \u003c2.3.9",
                "product": {
                  "name": "Moxa NPort NPort 6000 \u003c2.3.9",
                  "product_id": "T055551"
                }
              },
              {
                "category": "product_version",
                "name": "NPort 6000 2.3.9",
                "product": {
                  "name": "Moxa NPort NPort 6000 2.3.9",
                  "product_id": "T055551-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:moxa:nport:nport_6000__2.3.9"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "NPort"
          }
        ],
        "category": "vendor",
        "name": "Moxa"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-10831",
      "product_status": {
        "known_affected": [
          "T055551"
        ]
      },
      "release_date": "2026-06-16T22:00:00.000+00:00",
      "title": "CVE-2026-10831"
    }
  ]
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-10831 (GCVE-0-2026-10831)

CERTFR-2026-AVI-0763

Solutions

FKIE_CVE-2026-10831

GHSA-FXJ4-V3M4-37HJ

WID-SEC-W-2026-1973

Tags

Sightings

Nomenclature