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CVE-2025-49643

Estado: AnalizadaMedia (6)—

An authenticated Zabbix user (including Guest) is able to cause disproportionate CPU load on the webserver by sending specially crafted parameters to /imgstore.php, leading to potential denial of service.

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)

Zabbix — Frontend

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-49643",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2025-49643",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-12-01T14:33:57.352604Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "security@zabbix.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 6,
          "Automatable": "NOT_DEFINED",
          "attackVector": "ADJACENT",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "security@zabbix.com",
      "affectedData": [
        {
          "repo": "https://git.zabbix.com/",
          "vendor": "Zabbix",
          "modules": [
            "Frontend"
          ],
          "product": "Zabbix",
          "versions": [
            {
              "status": "affected",
              "changes": [
                {
                  "at": "6.0.42",
                  "status": "unaffected"
                }
              ],
              "version": "6.0.0",
              "versionType": "git",
              "lessThanOrEqual": "6.0.41"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "7.0.19",
                  "status": "unaffected"
                }
              ],
              "version": "7.0.0",
              "versionType": "git",
              "lessThanOrEqual": "7.0.18"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "7.2.13",
                  "status": "unaffected"
                }
              ],
              "version": "7.2.0",
              "versionType": "git",
              "lessThanOrEqual": "7.2.12"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "7.4.3",
                  "status": "unaffected"
                }
              ],
              "version": "7.4.0",
              "versionType": "git",
              "lessThanOrEqual": "7.4.2"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2025-12-01T14:16:06.007",
  "references": [
    {
      "url": "https://support.zabbix.com/browse/ZBX-27284",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@zabbix.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@zabbix.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-405"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authenticated Zabbix user (including Guest) is able to cause disproportionate CPU load on the webserver by sending specially crafted parameters to /imgstore.php, leading to potential denial of service."
    },
    {
      "lang": "es",
      "value": "Un usuario autenticado de Zabbix (incluido Invitado) puede causar una carga de CPU desproporcionada en el servidor web al enviar parámetros especialmente diseñados a /imgstore.php, lo que puede llevar a una potencial denegación de servicio."
    }
  ],
  "lastModified": "2026-09-26T00:10:00.127",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
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              "versionEndExcluding": "6.0.42",
              "versionStartIncluding": "6.0.0"
            },
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              "versionEndExcluding": "7.0.19",
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            },
            {
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          ],
          "operator": "OR"
        }
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  ],
  "sourceIdentifier": "security@zabbix.com"
}