FKIE_CVE-2020-9438

Vulnerability from fkie_nvd - Published: 2020-06-23 15:15 - Updated: 2026-06-17 03:27
Severity
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
Tinxy Door Lock with firmware before 3.2 allow attackers to unlock a door by replaying an Unlock request that occurred when the attacker was previously authorized. In other words, door-access revocation is mishandled.
References
cve@mitre.orghttps://medium.com/%40avishek_75733/smart-products-are-always-not-that-smart-tinxy-smart-door-lock-vulnerability-97f91e435e06
af854a3a-2127-422b-91ae-364da2661108https://medium.com/%40avishek_75733/smart-products-are-always-not-that-smart-tinxy-smart-door-lock-vulnerability-97f91e435e06
Impacted products
Vendor Product Version
tinxy smart_wifi_door_lock_firmware *
tinxy smart_wifi_door_lock -
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:tinxy:smart_wifi_door_lock_firmware:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4348C05F-D88E-4486-B113-F3206FB097AE",
              "versionEndExcluding": "3.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:tinxy:smart_wifi_door_lock:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "CD441E82-8372-4137-8EE3-580A4EBF3EB1",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Tinxy Door Lock with firmware before 3.2 allow attackers to unlock a door by replaying an Unlock request that occurred when the attacker was previously authorized. In other words, door-access revocation is mishandled."
    },
    {
      "lang": "es",
      "value": "Tinxy Door Lock con versi\u00f3n de firmware anterior a 3.2, permite a atacantes desbloquear una puerta al reproducir una petici\u00f3n Unlock que se produjo cuando el atacante fue autorizado previamente. En otras palabras, la revocaci\u00f3n de acceso a la puerta es manejada inapropiadamente"
    }
  ],
  "id": "CVE-2020-9438",
  "lastModified": "2026-06-17T03:27:57.190",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-06-23T15:15:13.547",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "https://medium.com/%40avishek_75733/smart-products-are-always-not-that-smart-tinxy-smart-door-lock-vulnerability-97f91e435e06"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://medium.com/%40avishek_75733/smart-products-are-always-not-that-smart-tinxy-smart-door-lock-vulnerability-97f91e435e06"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-294"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
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.