Vulnerability-Lookup

GHSA-F2JW-4MH9-F63V

Vulnerability from github – Published: 2026-02-25 18:31 – Updated: 2026-02-26 18:31

Details

Due to missing neutralization of special elements, OS commands can be injected via the update functionality of a TLS-SRP connection, which is normally used for configuring devices inside the mesh network. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

Severity ?

9.8 (Critical)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-27849"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-25T17:25:40Z",
    "severity": "CRITICAL"
  },
  "details": "Due to missing neutralization of special elements, OS commands can be injected via the update functionality of a TLS-SRP connection, which is normally used for configuring devices inside the mesh network.\nThis issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.",
  "id": "GHSA-f2jw-4mh9-f63v",
  "modified": "2026-02-26T18:31:39Z",
  "published": "2026-02-25T18:31:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27849"
    },
    {
      "type": "WEB",
      "url": "https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-011.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-27849 (GCVE-0-2026-27849)

Vulnerability from cvelistv5 – Published: 2026-02-25 16:20 – Updated: 2026-02-26 16:47

Title

Missing neutralization in Linksys MR9600, Linksys MX4200

Summary

Severity ?

9.8 (Critical)


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

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

ENISA

References

URL

Tags

https://www.syss.de/fileadmin/dokumente/Publikati…

third-party-advisorytechnical-description

Impacted products

Vendor

Product

Version

Linksys

MR9600

Affected: 1.0.4.205530

Linksys

MX4200

Affected: 1.0.13.210200

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-27849",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-26T16:46:53.068105Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-26T16:47:01.147Z",
          "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": [
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          "supportingMedia": [
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              "type": "text/html",
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            }
          ],
          "value": "Due to missing neutralization of special elements, OS commands can be injected via the update functionality of a TLS-SRP connection, which is normally used for configuring devices inside the mesh network.\nThis issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-88",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-88 OS Command Injection"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "cweId": "CWE-78",
              "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-25T16:20:25.395Z",
        "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-2025-011.txt"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Missing neutralization in Linksys MR9600, Linksys MX4200",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
    "assignerShortName": "ENISA",
    "cveId": "CVE-2026-27849",
    "datePublished": "2026-02-25T16:20:25.395Z",
    "dateReserved": "2026-02-24T07:07:48.974Z",
    "dateUpdated": "2026-02-26T16:47:01.147Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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

GHSA-F2JW-4MH9-F63V

CVE-2026-27849 (GCVE-0-2026-27849)

Tags

Sightings

Nomenclature