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

Vulnerability from cvelistv5 – Published: 2026-09-21 00:30 – Updated: 2026-09-21 00:30
VLAI
Title
Netcore NBR200V2 WAN VLAN Reconfiguration routerd wan_config_set_vlan buffer overflow
Summary
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
9.4 (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
Assigner
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
Vendor Product Version CPE status
Netcore NBR200V2 Affected: 1.3.241127.071246
    cpe:2.3:a:netcore:nbr200v2:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
FirmHarness (VulDB User) VulDB CNA Team
Show details on NVD website
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"
            }
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        }
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        }
      ],
      "metrics": [
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      "providerMetadata": {
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          "tags": [
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          "url": "https://vuldb.com/vuln/408029/cti"
        },
        {
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          "tags": [
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        },
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          "name": "Submit #892994 | netcore NBR200V2 V1.3.241127.071246 Buffer Overflow",
          "tags": [
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          "time": "2026-09-20T02:00:00.000Z",
          "value": "VulDB entry created"
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          "lang": "en",
          "time": "2026-09-20T11:24:46.000Z",
          "value": "VulDB entry last update"
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      ],
      "title": "Netcore NBR200V2 WAN VLAN Reconfiguration routerd wan_config_set_vlan buffer overflow",
      "x_generator": [
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    }
  },
  "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",
  "vulnerability-lookup:meta": {
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        "affected": [
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                  "cpe:2.3:a:netcore:nbr200v2:*:*:*:*:*:*:*:*"
                ],
                "modules": [
                  "WAN VLAN Reconfiguration"
                ],
                "product": "NBR200V2",
                "vendor": "Netcore",
                "versions": [
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        "cveTags": [],
        "descriptions": [
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            "lang": "en",
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          }
        ],
        "id": "CVE-2026-94100",
        "lastModified": "2026-09-21T01:16:30.170",
        "metrics": {
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            {
              "acInsufInfo": false,
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          "cvssMetricV40": [
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                "Recovery": "NOT_DEFINED",
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                "exploitMaturity": "PROOF_OF_CONCEPT",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "LOW",
                "providerUrgency": "NOT_DEFINED",
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}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.