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CVE-2016-8720

Status: ModifiedMedium (4.3)—

An exploitable HTTP Header Injection vulnerability exists in the Web Application functionality of the Moxa AWK-3131A Wireless Access Point running firmware 1.1. A specially crafted HTTP request can inject a payload in the bkpath parameter which will be copied in to Location header of the HTTP response.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Moxa — Awk-3131a Firmware

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2016-8720",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
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    "cvssMetricV30": [
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        "type": "Secondary",
        "source": "talos-cna@cisco.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 3.1,
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 1.6
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
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          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
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          "userInteraction": "REQUIRED",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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        "impactScore": 1.4,
        "exploitabilityScore": 2.8
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    ]
  },
  "affected": [
    {
      "source": "talos-cna@cisco.com",
      "affectedData": [
        {
          "vendor": "Moxa",
          "product": "AWK-3131A Series Industrial IEEE 802.11a/b/g/n wireless AP/bridge/client",
          "versions": [
            {
              "status": "affected",
              "version": "1.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-04-13T19:59:00.237",
  "references": [
    {
      "url": "http://www.talosintelligence.com/reports/TALOS-2016-0234/",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ],
      "source": "talos-cna@cisco.com"
    },
    {
      "url": "http://www.talosintelligence.com/reports/TALOS-2016-0234/",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-74"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An exploitable HTTP Header Injection vulnerability exists in the Web Application functionality of the Moxa AWK-3131A Wireless Access Point running firmware 1.1. A specially crafted HTTP request can inject a payload in the bkpath parameter which will be copied in to Location header of the HTTP response."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad explotable de HTTP Header Injection en la funcionalidad de aplicación WWeb Application del Moxa AWK-3131A Wireless Access Point que ejecuta el firmware 1.1. Una petición HTTP especialmente diseñada puede inyectar una carga útil en el parámetro bkpath que se copiará en el encabezado Location de la respuesta HTTP."
    }
  ],
  "lastModified": "2026-06-17T00:54:52.717",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:moxa:awk-3131a_firmware:1.1:*:*:*:*:*:*:*",
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          ],
          "operator": "OR"
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          "operator": "OR"
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      "operator": "AND"
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  ],
  "sourceIdentifier": "talos-cna@cisco.com"
}