VAR-202508-2009

Vulnerability from variot - Updated: 2025-08-23 23:14

A vulnerability was identified in Tenda AC20 16.03.08.12. Affected is the function websFormDefine of the file /goform/telnet of the component Telnet Service. The manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Shenzhen Tenda Technology Co.,Ltd. of AC20 The firmware contains injection and command injection vulnerabilities.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. This vulnerability stems from the websFormDefine function in the /goform/telnet file failing to properly sanitize special characters and commands when constructing commands. An attacker could exploit this vulnerability to execute arbitrary commands

Show details on source website
To clipboard 

{
  "@context": {
    "@vocab": "https://www.variotdbs.pl/ref/VARIoTentry#",
    "affected_products": {
      "@id": "https://www.variotdbs.pl/ref/affected_products"
    },
    "credits": {
      "@id": "https://www.variotdbs.pl/ref/credits"
    },
    "cvss": {
      "@id": "https://www.variotdbs.pl/ref/cvss/"
    },
    "description": {
      "@id": "https://www.variotdbs.pl/ref/description/"
    },
    "exploit_availability": {
      "@id": "https://www.variotdbs.pl/ref/exploit_availability/"
    },
    "external_ids": {
      "@id": "https://www.variotdbs.pl/ref/external_ids/"
    },
    "iot": {
      "@id": "https://www.variotdbs.pl/ref/iot/"
    },
    "iot_taxonomy": {
      "@id": "https://www.variotdbs.pl/ref/iot_taxonomy/"
    },
    "patch": {
      "@id": "https://www.variotdbs.pl/ref/patch/"
    },
    "problemtype_data": {
      "@id": "https://www.variotdbs.pl/ref/problemtype_data/"
    },
    "references": {
      "@id": "https://www.variotdbs.pl/ref/references/"
    },
    "sources": {
      "@id": "https://www.variotdbs.pl/ref/sources/"
    },
    "sources_release_date": {
      "@id": "https://www.variotdbs.pl/ref/sources_release_date/"
    },
    "sources_update_date": {
      "@id": "https://www.variotdbs.pl/ref/sources_update_date/"
    },
    "threat_type": {
      "@id": "https://www.variotdbs.pl/ref/threat_type/"
    },
    "title": {
      "@id": "https://www.variotdbs.pl/ref/title/"
    },
    "type": {
      "@id": "https://www.variotdbs.pl/ref/type/"
    }
  },
  "@id": "https://www.variotdbs.pl/vuln/VAR-202508-2009",
  "affected_products": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/affected_products#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        },
        "@id": "https://www.variotdbs.pl/ref/sources"
      }
    },
    "data": [
      {
        "model": "ac20",
        "scope": "eq",
        "trust": 1.6,
        "vendor": "tenda",
        "version": "16.03.08.12"
      },
      {
        "model": "ac20",
        "scope": "eq",
        "trust": 0.8,
        "vendor": "tenda",
        "version": null
      },
      {
        "model": "ac20",
        "scope": "eq",
        "trust": 0.8,
        "vendor": "tenda",
        "version": "ac20  firmware  16.03.08.12"
      },
      {
        "model": "ac20",
        "scope": null,
        "trust": 0.8,
        "vendor": "tenda",
        "version": null
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2025-19109"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2025-012083"
      },
      {
        "db": "NVD",
        "id": "CVE-2025-9090"
      }
    ]
  },
  "cve": "CVE-2025-9090",
  "cvss": {
    "@context": {
      "cvssV2": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/cvss/cvssV2#"
        },
        "@id": "https://www.variotdbs.pl/ref/cvss/cvssV2"
      },
      "cvssV3": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/cvss/cvssV3#"
        },
        "@id": "https://www.variotdbs.pl/ref/cvss/cvssV3/"
      },
      "severity": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/cvss/severity#"
        },
        "@id": "https://www.variotdbs.pl/ref/cvss/severity"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        },
        "@id": "https://www.variotdbs.pl/ref/sources"
      }
    },
    "data": [
      {
        "cvssV2": [
          {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "author": "cna@vuldb.com",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.5,
            "confidentialityImpact": "PARTIAL",
            "exploitabilityScore": 8.0,
            "id": "CVE-2025-9090",
            "impactScore": 6.4,
            "integrityImpact": "PARTIAL",
            "severity": "MEDIUM",
            "trust": 1.0,
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
            "version": "2.0"
          },
          {
            "acInsufInfo": null,
            "accessComplexity": "Low",
            "accessVector": "Network",
            "authentication": "Single",
            "author": "OTHER",
            "availabilityImpact": "Partial",
            "baseScore": 6.5,
            "confidentialityImpact": "Partial",
            "exploitabilityScore": null,
            "id": "JVNDB-2025-012083",
            "impactScore": null,
            "integrityImpact": "Partial",
            "obtainAllPrivilege": null,
            "obtainOtherPrivilege": null,
            "obtainUserPrivilege": null,
            "severity": "Medium",
            "trust": 0.8,
            "userInteractionRequired": null,
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
            "version": "2.0"
          },
          {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "author": "CNVD",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.5,
            "confidentialityImpact": "PARTIAL",
            "exploitabilityScore": 8.0,
            "id": "CNVD-2025-19109",
            "impactScore": 6.4,
            "integrityImpact": "PARTIAL",
            "severity": "MEDIUM",
            "trust": 0.6,
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
            "version": "2.0"
          }
        ],
        "cvssV3": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "author": "cna@vuldb.com",
            "availabilityImpact": "LOW",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "exploitabilityScore": 2.8,
            "id": "CVE-2025-9090",
            "impactScore": 3.4,
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "trust": 1.0,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          },
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "author": "nvd@nist.gov",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "exploitabilityScore": 3.9,
            "id": "CVE-2025-9090",
            "impactScore": 5.9,
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "trust": 1.0,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          {
            "attackComplexity": "Low",
            "attackVector": "Network",
            "author": "NVD",
            "availabilityImpact": "High",
            "baseScore": 9.8,
            "baseSeverity": "Critical",
            "confidentialityImpact": "High",
            "exploitabilityScore": null,
            "id": "JVNDB-2025-012083",
            "impactScore": null,
            "integrityImpact": "High",
            "privilegesRequired": "None",
            "scope": "Unchanged",
            "trust": 0.8,
            "userInteraction": "None",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        ],
        "severity": [
          {
            "author": "cna@vuldb.com",
            "id": "CVE-2025-9090",
            "trust": 1.0,
            "value": "Low"
          },
          {
            "author": "nvd@nist.gov",
            "id": "CVE-2025-9090",
            "trust": 1.0,
            "value": "CRITICAL"
          },
          {
            "author": "OTHER",
            "id": "JVNDB-2025-012083",
            "trust": 0.8,
            "value": "Critical"
          },
          {
            "author": "CNVD",
            "id": "CNVD-2025-19109",
            "trust": 0.6,
            "value": "MEDIUM"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2025-19109"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2025-012083"
      },
      {
        "db": "NVD",
        "id": "CVE-2025-9090"
      },
      {
        "db": "NVD",
        "id": "CVE-2025-9090"
      }
    ]
  },
  "description": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/description#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "A vulnerability was identified in Tenda AC20 16.03.08.12. Affected is the function websFormDefine of the file /goform/telnet of the component Telnet Service. The manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Shenzhen Tenda Technology Co.,Ltd. of AC20 The firmware contains injection and command injection vulnerabilities.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. This vulnerability stems from the websFormDefine function in the /goform/telnet file failing to properly sanitize special characters and commands when constructing commands. An attacker could exploit this vulnerability to execute arbitrary commands",
    "sources": [
      {
        "db": "NVD",
        "id": "CVE-2025-9090"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2025-012083"
      },
      {
        "db": "CNVD",
        "id": "CNVD-2025-19109"
      }
    ],
    "trust": 2.16
  },
  "external_ids": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/external_ids#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "db": "NVD",
        "id": "CVE-2025-9090",
        "trust": 3.2
      },
      {
        "db": "VULDB",
        "id": "320358",
        "trust": 1.8
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2025-012083",
        "trust": 0.8
      },
      {
        "db": "CNVD",
        "id": "CNVD-2025-19109",
        "trust": 0.6
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2025-19109"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2025-012083"
      },
      {
        "db": "NVD",
        "id": "CVE-2025-9090"
      }
    ]
  },
  "id": "VAR-202508-2009",
  "iot": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/iot#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": true,
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2025-19109"
      }
    ],
    "trust": 0.06
  },
  "iot_taxonomy": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/iot_taxonomy#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "category": [
          "Network device"
        ],
        "sub_category": null,
        "trust": 0.6
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2025-19109"
      }
    ]
  },
  "last_update_date": "2025-08-23T23:14:27.981000Z",
  "problemtype_data": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/problemtype_data#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "problemtype": "CWE-74",
        "trust": 1.0
      },
      {
        "problemtype": "CWE-77",
        "trust": 1.0
      },
      {
        "problemtype": "injection (CWE-74) [ others ]",
        "trust": 0.8
      },
      {
        "problemtype": " Command injection (CWE-77) [ others ]",
        "trust": 0.8
      }
    ],
    "sources": [
      {
        "db": "JVNDB",
        "id": "JVNDB-2025-012083"
      },
      {
        "db": "NVD",
        "id": "CVE-2025-9090"
      }
    ]
  },
  "references": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/references#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "trust": 1.8,
        "url": "https://github.com/zz2266/.github.io/blob/main/ac20/telnet/readme.md"
      },
      {
        "trust": 1.8,
        "url": "https://github.com/zz2266/.github.io/blob/main/ac20/telnet/readme.md#poc-exploit-steps"
      },
      {
        "trust": 1.8,
        "url": "https://vuldb.com/?id.320358"
      },
      {
        "trust": 1.8,
        "url": "https://vuldb.com/?submit.632232"
      },
      {
        "trust": 1.8,
        "url": "https://www.tenda.com.cn/"
      },
      {
        "trust": 1.4,
        "url": "https://nvd.nist.gov/vuln/detail/cve-2025-9090"
      },
      {
        "trust": 1.0,
        "url": "https://vuldb.com/?ctiid.320358"
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2025-19109"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2025-012083"
      },
      {
        "db": "NVD",
        "id": "CVE-2025-9090"
      }
    ]
  },
  "sources": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "db": "CNVD",
        "id": "CNVD-2025-19109"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2025-012083"
      },
      {
        "db": "NVD",
        "id": "CVE-2025-9090"
      }
    ]
  },
  "sources_release_date": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources_release_date#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "date": "2025-08-21T00:00:00",
        "db": "CNVD",
        "id": "CNVD-2025-19109"
      },
      {
        "date": "2025-08-22T00:00:00",
        "db": "JVNDB",
        "id": "JVNDB-2025-012083"
      },
      {
        "date": "2025-08-17T03:15:26.527000",
        "db": "NVD",
        "id": "CVE-2025-9090"
      }
    ]
  },
  "sources_update_date": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources_update_date#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "date": "2025-08-21T00:00:00",
        "db": "CNVD",
        "id": "CNVD-2025-19109"
      },
      {
        "date": "2025-08-22T06:01:00",
        "db": "JVNDB",
        "id": "JVNDB-2025-012083"
      },
      {
        "date": "2025-08-21T16:10:48.110000",
        "db": "NVD",
        "id": "CVE-2025-9090"
      }
    ]
  },
  "title": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/title#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "Shenzhen\u00a0Tenda\u00a0Technology\u00a0Co.,Ltd.\u00a0 of \u00a0AC20\u00a0 Injection Vulnerability in Firmware",
    "sources": [
      {
        "db": "JVNDB",
        "id": "JVNDB-2025-012083"
      }
    ],
    "trust": 0.8
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.