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CVE-2021-20618

Estado: ModificadaCrítica (9.8)—

Privilege chaining vulnerability in acmailer ver. 4.0.2 and earlier, and acmailer DB ver. 1.1.4 and earlier allows remote attackers to bypass authentication and to gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Acmailer — AcmailerAcmailer — Acmailer DB

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-20618",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 10,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "vultures@jpcert.or.jp",
      "affectedData": [
        {
          "vendor": "Seeds Co.,Ltd.",
          "product": "acmailer and acmailer DB",
          "versions": [
            {
              "status": "affected",
              "version": "acmailer ver. 4.0.2 and earlier, and acmailer DB ver. 1.1.4 and earlier"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-01-14T09:15:13.740",
  "references": [
    {
      "url": "https://jvn.jp/en/jp/JVN35906450/index.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://www.acmailer.jp/info/de.cgi?id=101",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://jvn.jp/en/jp/JVN35906450/index.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.acmailer.jp/info/de.cgi?id=101",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Privilege chaining vulnerability in acmailer ver. 4.0.2 and earlier, and acmailer DB ver. 1.1.4 and earlier allows remote attackers to bypass authentication and to gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de encadenamiento de privilegios en acmailer versiones ver. 4.0.2 y anteriores, y acmailer DB versiones ver. 1.1.4 y anteriores, permiten a atacantes remotos omitir la autenticación y alcanzar un privilegio administrativo que puede resultar en la obtención de información confidencial en el servidor por medio de vectores no especificados"
    }
  ],
  "lastModified": "2026-06-17T03:34:07.920",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:acmailer:acmailer:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4E22335A-B970-443E-BE48-83D29D4B02EA",
              "versionEndIncluding": "4.0.2"
            },
            {
              "criteria": "cpe:2.3:a:acmailer:acmailer_db:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "53E9A059-D02B-409B-81EB-DB11CEFE523C",
              "versionEndIncluding": "1.1.4"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "vultures@jpcert.or.jp"
}