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FKIE_CVE-2022-38956

Vulnerability from fkie_nvd - Published: 2022-09-20 18:15 - Updated: 2026-06-17 04:57
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Summary
An exploitable firmware downgrade vulnerability was discovered on the Netgear WPN824EXT WiFi Range Extender. An attacker can conduct a MITM attack to replace the user-uploaded firmware image with an original old firmware image. This affects Firmware 1.1.1_1.1.9 and earlier.
References
cve@mitre.orghttps://hackmd.io/%40eupX2KdkT6iNpqJUWk9p4A/SyAnOSd1s
cve@mitre.orghttps://www.netgear.com/about/security/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://hackmd.io/%40eupX2KdkT6iNpqJUWk9p4A/SyAnOSd1s
af854a3a-2127-422b-91ae-364da2661108https://www.netgear.com/about/security/Vendor Advisory
Impacted products
Vendor Product Version
netgear wpn824ext_firmware *
netgear wpn824ext -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netgear:wpn824ext_firmware:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B8BF4144-9D9D-4D80-9E76-788F83943762",
              "versionEndIncluding": "1.1.1_1.1.9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:h:netgear:wpn824ext:-:*:*:*:*:*:*:*",
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              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
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      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An exploitable firmware downgrade vulnerability was discovered on the Netgear WPN824EXT WiFi Range Extender. An attacker can conduct a MITM attack to replace the user-uploaded firmware image with an original old firmware image. This affects Firmware 1.1.1_1.1.9 and earlier."
    },
    {
      "lang": "es",
      "value": "Se ha detectado una vulnerabilidad explotable de downgrade de firmware en el extensor de rango WiFi WPN824EXT de Netgear. Un atacante puede llevar a cabo un ataque de tipo MITM para sustituir la imagen de firmware descargada por el usuario por una imagen de firmware antigua original. Esto afecta al firmware 1.1.1_1.1.9 y anteriores"
    }
  ],
  "id": "CVE-2022-38956",
  "lastModified": "2026-06-17T04:57:20.813",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
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        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "version": "3.1"
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        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
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    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-38956",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-05-28T16:11:29.033749Z",
          "version": "2.0.3"
        }
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  },
  "published": "2022-09-20T18:15:10.403",
  "references": [
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      "source": "cve@mitre.org",
      "url": "https://hackmd.io/%40eupX2KdkT6iNpqJUWk9p4A/SyAnOSd1s"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://www.netgear.com/about/security/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://hackmd.io/%40eupX2KdkT6iNpqJUWk9p4A/SyAnOSd1s"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-354"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-354"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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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.

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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