« Volver al listado

CVE-2026-20035

Estado: AnalizadaAlta (7.2)—

A vulnerability in the web UI of Cisco Unity Connection Web Inbox could allow an unauthenticated, remote attacker to conduct SSRF attacks through an affected device.

This vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to send arbitrary network requests that are sourced from the affected device.

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.

Vector CVSS con AV:N/PR:N/UI:N indica explotación remota sin autenticación (T1190). CWE-918 y descripción explícita de SSRF confirman impacto T1090 (proxy/SSRF para enviar solicitudes arbitrarias desde el dispositivo).

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

Filter Network TrafficVulnerability ScanningSSL/TLS InspectionPrivileged Account ManagementNetwork SegmentationNetwork Intrusion Prevention

Tecnologías afectadas (1)

Cisco — Unity Connection

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-20035",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-20035",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-06T17:27:15.669186Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@cisco.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 7.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "Cisco",
          "product": "Cisco Unity Connection",
          "versions": [
            {
              "status": "affected",
              "version": "12.5(1)"
            },
            {
              "status": "affected",
              "version": "12.5(1)SU1"
            },
            {
              "status": "affected",
              "version": "12.5(1)SU2"
            },
            {
              "status": "affected",
              "version": "12.5(1)SU3"
            },
            {
              "status": "affected",
              "version": "12.5(1)SU4"
            },
            {
              "status": "affected",
              "version": "14"
            },
            {
              "status": "affected",
              "version": "12.5(1)SU5"
            },
            {
              "status": "affected",
              "version": "14SU1"
            },
            {
              "status": "affected",
              "version": "12.5(1)SU6"
            },
            {
              "status": "affected",
              "version": "14SU2"
            },
            {
              "status": "affected",
              "version": "12.5(1)SU7"
            },
            {
              "status": "affected",
              "version": "14SU3"
            },
            {
              "status": "affected",
              "version": "12.5(1)SU8"
            },
            {
              "status": "affected",
              "version": "14SU3a"
            },
            {
              "status": "affected",
              "version": "12.5(1)SU8a"
            },
            {
              "status": "affected",
              "version": "15"
            },
            {
              "status": "affected",
              "version": "15SU1"
            },
            {
              "status": "affected",
              "version": "14SU4"
            },
            {
              "status": "affected",
              "version": "12.5(1)SU9"
            },
            {
              "status": "affected",
              "version": "15SU2"
            },
            {
              "status": "affected",
              "version": "15SU3"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2026-05-06T17:16:20.280",
  "references": [
    {
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-unity-rce-ssrf-hENhuASy",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the web UI of Cisco Unity Connection Web Inbox could allow an unauthenticated, remote attacker to conduct SSRF attacks through an affected device.\r\n\r\nThis vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to send arbitrary network requests that are sourced from the affected device."
    }
  ],
  "lastModified": "2026-07-08T13:15:03.710",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6313AB2B-8CBB-48FF-BCBF-B24DE98855EF",
              "versionEndExcluding": "14.0"
            },
            {
              "criteria": "cpe:2.3:a:cisco:unity_connection:14.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A85D56C0-D4A3-43A7-9CD1-FCEB6C8AEF66"
            },
            {
              "criteria": "cpe:2.3:a:cisco:unity_connection:14su1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "774C01A1-9328-45E8-9BDD-470A10BC3C2A"
            },
            {
              "criteria": "cpe:2.3:a:cisco:unity_connection:14su2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CD8AB4B5-12C2-4F02-A4C3-4B8C06AFFD53"
            },
            {
              "criteria": "cpe:2.3:a:cisco:unity_connection:14su3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "181866CE-6279-4422-8EF8-7A12DB5B21F6"
            },
            {
              "criteria": "cpe:2.3:a:cisco:unity_connection:14su4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D09F3655-B513-48F6-82A8-F0F946C52D25"
            },
            {
              "criteria": "cpe:2.3:a:cisco:unity_connection:15.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "97CC6719-1A7F-48BA-8014-802E235ED80D"
            },
            {
              "criteria": "cpe:2.3:a:cisco:unity_connection:15su1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2C9412EC-282C-4926-83F8-932E24E0FC22"
            },
            {
              "criteria": "cpe:2.3:a:cisco:unity_connection:15su2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "37EFE547-7D3C-4D71-8D46-2C5734B9D64B"
            },
            {
              "criteria": "cpe:2.3:a:cisco:unity_connection:15su3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CE6AF25B-E6F9-4E15-902D-4516DFE8C8E2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}