« Volver al listado

CVE-2026-8850

Estado: AnalizadaAlta (7.5)—

IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service via the optional module mod_ibm_upload.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:N sin autenticación en servidor web IBM HTTP (mod_ibm_upload) permite DoS remoto por null pointer dereference (CWE-476).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Tecnologías afectadas (1)

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-8850",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-8850",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-26T18:32:50.985894Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@us.ibm.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@us.ibm.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:http_server:8.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:http_server:8.5.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:http_server:9.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:http_server:9.0.0:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "HTTP Server",
          "versions": [
            {
              "status": "affected",
              "version": "8.5.0",
              "versionType": "semver",
              "lessThanOrEqual": "Interim Fix 002"
            },
            {
              "status": "affected",
              "version": "9.0",
              "versionType": "semver"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-05-26T17:16:55.640",
  "references": [
    {
      "url": "https://www.ibm.com/support/pages/node/7274065",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@us.ibm.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service via the optional module mod_ibm_upload."
    },
    {
      "lang": "es",
      "value": "IBM HTTP Server 8.5 y 9.0 es vulnerable a denegación de servicio a través del módulo opcional mod_ibm_upload."
    }
  ],
  "lastModified": "2026-07-23T11:10:00.120",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ibm:http_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D02EA5D6-7556-4C20-A991-6DC5F6B7351B",
              "versionEndExcluding": "8.5.5.30",
              "versionStartIncluding": "8.5.0.0"
            },
            {
              "criteria": "cpe:2.3:a:ibm:http_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F7790D7F-B70F-4278-877B-DE501C60A9B5",
              "versionEndExcluding": "9.0.5.29",
              "versionStartIncluding": "9.0.0.0"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "E492C463-D76E-49B7-A4D4-3B499E422D89"
            },
            {
              "criteria": "cpe:2.3:o:ibm:z\\/os:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "0E97A964-6F9E-4C87-9B90-21AE2C1DF52F"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com"
}