Vulnerability-Lookup

GHSA-243X-W9GP-RR5Q

Vulnerability from github – Published: 2026-09-21 03:30 – Updated: 2026-09-21 03:30

Details

A weakness has been identified in Netcore NBR200V2 1.3.241127.071246. Impacted is the function wan_config_set_vlan of the file /usr/bin/routerd of the component WAN VLAN Reconfiguration. Executing a manipulation of the argument vlan_wanX.ports can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Severity

9.9 (Critical)


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

8.6 (High)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-94100"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-21T01:16:30Z",
    "severity": "HIGH"
  },
  "details": "A weakness has been identified in Netcore NBR200V2 1.3.241127.071246. Impacted is the function wan_config_set_vlan of the file /usr/bin/routerd of the component WAN VLAN Reconfiguration. Executing a manipulation of the argument vlan_wanX.ports can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.",
  "id": "GHSA-243x-w9gp-rr5q",
  "modified": "2026-09-21T03:30:21Z",
  "published": "2026-09-21T03:30:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-94100"
    },
    {
      "type": "WEB",
      "url": "https://app.notion.com/p/Netcore-NBR200V2-Vul-8-39f797159f158003ad3eff2fd36342b6"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-94100"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/892994"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/408029"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/408029/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/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-2026-94100 (GCVE-0-2026-94100)

Vulnerability from cvelistv5 – Published: 2026-09-21 00:30 – Updated: 2026-09-21 00:30

Title

Netcore NBR200V2 WAN VLAN Reconfiguration routerd wan_config_set_vlan buffer overflow

Summary

Severity

9.4 (Critical)


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

9.9 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

9.9 (Critical)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

CWE

CWE-120 - Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB mitre root

References

5 references

URL	Tags
https://vuldb.com/vuln/408029	vdb-entrytechnical-description
https://vuldb.com/vuln/408029/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-94100	third-party-advisory
https://vuldb.com/submit/892994	third-party-advisory
https://app.notion.com/p/Netcore-NBR200V2-Vul-8-3…	exploit

Impacted products

1 product

Vendor	Product	Version
Netcore	NBR200V2	Affected: 1.3.241127.071246 cpe:2.3:a:netcore:nbr200v2::::::::

Credits

FirmHarness (VulDB User) VulDB CNA Team

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JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:netcore:nbr200v2:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "WAN VLAN Reconfiguration"
          ],
          "product": "NBR200V2",
          "vendor": "Netcore",
          "versions": [
            {
              "status": "affected",
              "version": "1.3.241127.071246"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "FirmHarness (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A weakness has been identified in Netcore NBR200V2 1.3.241127.071246. Impacted is the function wan_config_set_vlan of the file /usr/bin/routerd of the component WAN VLAN Reconfiguration. Executing a manipulation of the argument vlan_wanX.ports can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 9.4,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 9,
            "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-21T00:30:15.953Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-408029 | Netcore NBR200V2 WAN VLAN Reconfiguration routerd wan_config_set_vlan buffer overflow",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/408029"
        },
        {
          "name": "VDB-408029 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/408029/cti"
        },
        {
          "name": "CVE-2026-94100 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-94100"
        },
        {
          "name": "Submit #892994 | netcore NBR200V2 V1.3.241127.071246 Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/892994"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://app.notion.com/p/Netcore-NBR200V2-Vul-8-39f797159f158003ad3eff2fd36342b6"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-20T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-09-20T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-09-20T11:24:46.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Netcore NBR200V2 WAN VLAN Reconfiguration routerd wan_config_set_vlan buffer overflow",
      "x_generator": [
        "VulDB PVTS v202609"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-94100",
    "datePublished": "2026-09-21T00:30:15.953Z",
    "dateReserved": "2026-09-20T09:19:12.571Z",
    "dateUpdated": "2026-09-21T00:30:15.953Z",
    "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.

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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.

Action not permitted

GHSA-243X-W9GP-RR5Q

CVE-2026-94100 (GCVE-0-2026-94100)

Tags

Sightings

Nomenclature

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