Vulnerability-Lookup

FKIE_CVE-2026-27846

Vulnerability from fkie_nvd - Published: 2026-02-25 16:23 - Updated: 2026-06-17 10:27

Severity

6.2 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

Due to missing authentication, a user with physical access to the device can misuse the mesh functionality for adding a new mesh device to the network to gain access to sensitive information, including the password for admin access to the web interface and the Wi-Fi passwords.This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

References

	URL	Tags
	a6d3dc9e-0591-4a13-bce7-0f5b31ff6158	https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-002.txt

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "affected",
          "product": "MR9600",
          "vendor": "Linksys",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.4.205530"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "MX4200",
          "vendor": "Linksys",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.13.210200"
            }
          ]
        }
      ],
      "source": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Due to missing authentication, a user with physical access to the device can misuse the mesh functionality for adding a new mesh device to the network\u00a0\nto gain access to sensitive information, including the password for admin access to the web interface and the Wi-Fi passwords.This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200."
    },
    {
      "lang": "es",
      "value": "Debido a la falta de autenticaci\u00f3n, un usuario con acceso f\u00edsico al dispositivo puede hacer un uso indebido de la funcionalidad de malla para a\u00f1adir un nuevo dispositivo de malla a la red para obtener acceso a informaci\u00f3n sensible, incluyendo la contrase\u00f1a para el acceso de administrador a la interfaz web y las contrase\u00f1as de Wi-Fi. Este problema afecta a MR9600: 1.0.4.205530; MX4200: 1.0.13.210200."
    }
  ],
  "id": "CVE-2026-27846",
  "lastModified": "2026-06-17T10:27:46.950",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 6.2,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-27846",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-25T18:35:57.582373Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-25T16:23:28.710",
  "references": [
    {
      "source": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
      "url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-002.txt"
    }
  ],
  "sourceIdentifier": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
      "type": "Secondary"
    }
  ]
}

CVE-2026-27846 (GCVE-0-2026-27846)

Vulnerability from cvelistv5 – Published: 2026-02-25 15:03 – Updated: 2026-02-25 18:36

Title

Missing authentication in Linksys MR9600, Linksys MX4200

Summary

Severity

6.2 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-25 18:35 UTC

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

ENISA ENISA root

References

1 reference

URL	Tags
https://www.syss.de/fileadmin/dokumente/Publikati…	third-party-advisorytechnical-description

Impacted products

2 products

Vendor	Product	Version
Linksys	MR9600	Affected: 1.0.4.205530
Linksys	MX4200	Affected: 1.0.13.210200

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "NONE",
              "baseScore": 6.2,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-27846",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-25T18:35:57.582373Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-25T18:36:03.925Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "MR9600",
          "vendor": "Linksys",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.4.205530"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "MX4200",
          "vendor": "Linksys",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.13.210200"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Due to missing authentication, a user with physical access to the device can misuse the mesh functionality for adding a new mesh device to the network\u0026nbsp;\u003cbr\u003eto gain access to sensitive information, including the password for admin access to the web interface and the Wi-Fi passwords.\u003cp\u003eThis issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.\u003c/p\u003e"
            }
          ],
          "value": "Due to missing authentication, a user with physical access to the device can misuse the mesh functionality for adding a new mesh device to the network\u00a0\nto gain access to sensitive information, including the password for admin access to the web interface and the Wi-Fi passwords.This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-37",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-37 Retrieve Embedded Sensitive Data"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "CWE-306 Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-25T15:03:58.616Z",
        "orgId": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
        "shortName": "ENISA"
      },
      "references": [
        {
          "tags": [
            "third-party-advisory",
            "technical-description"
          ],
          "url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-002.txt"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Missing authentication in Linksys MR9600, Linksys MX4200",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
    "assignerShortName": "ENISA",
    "cveId": "CVE-2026-27846",
    "datePublished": "2026-02-25T15:03:58.616Z",
    "dateReserved": "2026-02-24T07:07:48.973Z",
    "dateUpdated": "2026-02-25T18:36:03.925Z",
    "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.

Detection rules are retrieved from Rulezet.

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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.