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CVE-2021-31793

Status: ModifiedHigh (7.5)—

An issue exists on NightOwl WDB-20-V2 WDB-20-V2_20190314 devices that allows an unauthenticated user to gain access to snapshots and video streams from the doorbell. The binary app offers a web server on port 80 that allows an unauthenticated user to take a snapshot from the doorbell camera via the /snapshot URI.

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)

Nightowlsp — Wdb-20 Firmware

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-31793",
  "cveTags": [],
  "metrics": {
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
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          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
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          "confidentialityImpact": "HIGH"
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  "affected": [
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  "published": "2021-05-06T17:15:08.113",
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-306"
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  "descriptions": [
    {
      "lang": "en",
      "value": "An issue exists on NightOwl WDB-20-V2 WDB-20-V2_20190314 devices that allows an unauthenticated user to gain access to snapshots and video streams from the doorbell. The binary app offers a web server on port 80 that allows an unauthenticated user to take a snapshot from the doorbell camera via the /snapshot URI."
    },
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      "lang": "es",
      "value": "Se presenta un problema en los dispositivos NightOwl WDB-20-V2 WDB-20-V2_20190314, que permite a un usuario no autenticado conseguir acceso a snapshots y video streams desde el doorbell. La aplicación binaria ofrece un servidor web en el puerto 80 que permite a un usuario no autenticado tomar una instantánea de la camera doorbell por medio del URI /snapshot"
    }
  ],
  "lastModified": "2026-06-17T03:52:14.613",
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