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CVE-2023-35311

Estado: AnalizadaAlta (7.5)⚠ Explotación activa

Microsoft Outlook Security Feature Bypass Vulnerability

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).

CISA KEV — explotada activamente

🎯 Técnicas ATT&CK

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

Requiere interacción del usuario (UI:R) en cliente Office/Outlook (T1203); bypass de seguridad permite ejecución de código remoto, phishing mejorado y posible tunelización.

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

Restrict Web-Based ContentUser TrainingUser Account ManagementSSL/TLS InspectionNetwork Intrusion PreventionExecution Prevention

Tecnologías afectadas (4)

Microsoft — 365 AppsMicrosoft — OfficeMicrosoft — Office Long Term Servicing ChannelMicrosoft — Outlook

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-35311",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-35311",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "active"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-02-04T17:53:50.345525Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "source": "secure@microsoft.com",
        "cvssData": {
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Secondary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
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    ]
  },
  "affected": [
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      "affectedData": [
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          "product": "Microsoft 365 Apps for Enterprise",
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          "platforms": [
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        {
          "vendor": "Microsoft",
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              "lessThan": "https://aka.ms/OfficeSecurityReleases",
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          ],
          "platforms": [
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        {
          "vendor": "Microsoft",
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            }
          ],
          "platforms": [
            "32-bit Systems",
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          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Outlook 2013",
          "versions": [
            {
              "status": "affected",
              "version": "14.0.0",
              "lessThan": "15.0.5571.1000",
              "versionType": "custom"
            }
          ],
          "platforms": [
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            "x64-based Systems"
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          "versions": [
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              "status": "affected",
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              "lessThan": "15.0.5571.1000",
              "versionType": "custom"
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          ],
          "platforms": [
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          ]
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  ],
  "published": "2023-07-11T18:15:17.177",
  "references": [
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      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35311",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35311",
      "tags": [
        "US Government Resource"
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ]
    },
    {
      "type": "Primary",
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      "description": [
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    {
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      "description": [
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          "lang": "en",
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        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Outlook Security Feature Bypass Vulnerability"
    }
  ],
  "lastModified": "2026-06-17T06:04:38.140",
  "cisaActionDue": "2023-08-01",
  "cisaExploitAdd": "2023-07-11",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "40C15EDD-98D4-4D06-BA06-21AE0F33C72D"
            },
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            },
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            },
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              "vulnerable": true,
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              "matchCriteriaId": "E2B1657C-0FF4-461A-BE2A-641275C4B0A0"
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          "operator": "OR"
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  "sourceIdentifier": "secure@microsoft.com",
  "cisaRequiredAction": "Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.",
  "cisaVulnerabilityName": "Microsoft Outlook Security Feature Bypass Vulnerability"
}