FKIE_CVE-2021-46008

Vulnerability from fkie_nvd - Published: 2022-03-30 23:15 - Updated: 2026-07-09 01:17
Severity
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In totolink a3100r V5.9c.4577, the hard-coded telnet password can be discovered from official released firmware. An attacker, who has connected to the Wi-Fi, can easily telnet into the target with root shell if the telnet is function turned on.
References
cve@mitre.orghttps://hackmd.io/ZkeEB-VvRiWBS53rFKG8DQExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://hackmd.io/ZkeEB-VvRiWBS53rFKG8DQExploit, Third Party Advisory
Impacted products
Vendor Product Version
totolink a3100r_firmware 5.9c.4577
totolink a3100r -
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:totolink:a3100r_firmware:5.9c.4577:*:*:*:*:*:*:*",
              "matchCriteriaId": "393F2623-291A-4E8B-80D6-D40193EE045A",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:h:totolink:a3100r:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "40729E79-9D89-440F-B38D-E62D310E27F9",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In totolink a3100r V5.9c.4577, the hard-coded telnet password can be discovered from official released firmware. An attacker, who has connected to the Wi-Fi, can easily telnet into the target with root shell if the telnet is function turned on."
    },
    {
      "lang": "es",
      "value": "En totolink a3100r versi\u00f3n V5.9c.4577, la contrase\u00f1a de telnet embebida puede ser detectada desde el firmware oficial liberado. Un atacante, que ha sido conectado a Wi-Fi, puede f\u00e1cilmente telnet en el objetivo con la shell root si el telnet es la funci\u00f3n habilitada"
    }
  ],
  "id": "CVE-2021-46008",
  "lastModified": "2026-07-09T01:17:12.527",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "ADJACENT_NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.9,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:A/AC:M/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 5.5,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
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    ]
  },
  "published": "2022-03-30T23:15:07.863",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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      "url": "https://hackmd.io/ZkeEB-VvRiWBS53rFKG8DQ"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-798"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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