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CVE-2026-55142

Estado: AnalizadaMedia (5.5)—

Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

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 (7)

Microsoft — 365 AppsMicrosoft — Microsoft 365Microsoft — Office 2019Microsoft — Office 2021Microsoft — Office 2024Microsoft — Sharepoint ServerMicrosoft — Word

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-55142",
  "cveTags": [],
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-14T19:00:16.518724Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
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          "product": "Microsoft SharePoint Server Subscription Edition",
          "versions": [
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              "version": "16.0.0",
              "lessThan": "16.0.19725.20434",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "x64-based Systems"
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Word 2016",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.1",
              "lessThan": "16.0.5561.1000",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "32-bit Systems",
            "x64-based Systems"
          ]
        }
      ]
    }
  ],
  "published": "2026-07-14T18:18:21.273",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55142",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-197"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to disclose information locally."
    }
  ],
  "lastModified": "2026-07-16T13:40:07.760",
  "configurations": [
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}