FKIE_CVE-2021-26634

Vulnerability from fkie_nvd - Published: 2022-06-02 14:15 - Updated: 2026-06-17 03:43
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
SQL injection and file upload attacks are possible due to insufficient validation of input values in some parameters and variables of files compromising Maxboard, which may lead to arbitrary code execution or privilege escalation. Attackers can use these vulnerabilities to perform attacks such as stealing server management rights using a web shell.
References
vuln@krcert.or.krhttps://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66746Broken Link, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66746Broken Link, Third Party Advisory
Impacted products
Vendor Product Version
maxb maxboard *
linux linux_kernel -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "platforms": [
            "Linux"
          ],
          "product": "Maxboard",
          "vendor": "Max Yi",
          "versions": [
            {
              "lessThanOrEqual": "1.9.5.1",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "vuln@krcert.or.kr"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:maxb:maxboard:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BFA3A850-B210-40BD-A12B-5EACD978EA28",
              "versionEndExcluding": "1.9.6",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SQL injection and file upload attacks are possible due to insufficient validation of input values in some parameters and variables of files compromising Maxboard, which may lead to arbitrary code execution or privilege escalation. Attackers can use these vulnerabilities to perform attacks such as stealing server management rights using a web shell."
    },
    {
      "lang": "es",
      "value": "Unos ataques de inyecci\u00f3n SQL y de carga de archivos son posibles debido a la insuficiente comprobaci\u00f3n de los valores de entrada en algunos par\u00e1metros y variables de los archivos que comprometen a Maxboard, lo que puede conllevar a una ejecuci\u00f3n de c\u00f3digo arbitrario o la escalada de privilegios. Los atacantes pueden usar estas vulnerabilidades para llevar a cabo ataques como el robo de derechos de administraci\u00f3n del servidor usando un shell web"
    }
  ],
  "id": "CVE-2021-26634",
  "lastModified": "2026-06-17T03:43:36.117",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "vuln@krcert.or.kr",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2022-06-02T14:15:28.243",
  "references": [
    {
      "source": "vuln@krcert.or.kr",
      "tags": [
        "Broken Link",
        "Third Party Advisory"
      ],
      "url": "https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66746"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link",
        "Third Party Advisory"
      ],
      "url": "https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66746"
    }
  ],
  "sourceIdentifier": "vuln@krcert.or.kr",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-89"
        },
        {
          "lang": "en",
          "value": "CWE-288"
        },
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ],
      "source": "vuln@krcert.or.kr",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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