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CVE-2018-8926

Estado: ModificadaAlta (8.8)—

Permissive regular expression vulnerability in synophoto_dsm_user in Synology Photo Station before 6.8.5-3471 and before 6.3-2975 allows remote authenticated users to conduct privilege escalation attacks via the fullname parameter.

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 (1)

Synology — Photo Station

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-8926",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "security@synology.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@synology.com",
      "affectedData": [
        {
          "vendor": "Synology",
          "product": "Photo Station",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "6.8.5-3471",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "6.3-2975",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2018-06-08T13:29:01.470",
  "references": [
    {
      "url": "https://www.synology.com/zh-tw/support/security/Synology_SA_18_15",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@synology.com"
    },
    {
      "url": "https://www.synology.com/zh-tw/support/security/Synology_SA_18_15",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@synology.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-625"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Permissive regular expression vulnerability in synophoto_dsm_user in Synology Photo Station before 6.8.5-3471 and before 6.3-2975 allows remote authenticated users to conduct privilege escalation attacks via the fullname parameter."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de expresión regular permisiva en synophoto_dsm_user en SYNOPHOTO_Flickr_MultiUpload en Synology Photo Station, en versiones anteriores a la 6.8.5-3471 y a la 6.3-2975, permite que usuarios autenticados remotos lleven a cabo ataques de escalado de privilegios mediante el parámetro fullname."
    }
  ],
  "lastModified": "2026-06-17T02:05:39.947",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:synology:photo_station:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CBF9F4EA-7FB0-4C8C-BC49-6AB435E89341",
              "versionEndIncluding": "6.3-2975",
              "versionStartIncluding": "6.3-2958"
            },
            {
              "criteria": "cpe:2.3:a:synology:photo_station:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AB7E17E9-519F-4E9E-BD76-C469929B3D13",
              "versionEndExcluding": "6.8.5-3471",
              "versionStartIncluding": "6.8.0-3456"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@synology.com"
}