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CVE-2026-55057

Estado: AnalizadaMedia (5.5)—

Integer overflow or wraparound in Microsoft Office 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 (6)

Microsoft — 365 AppsMicrosoft — Microsoft 365Microsoft — Office 2016Microsoft — Office 2019Microsoft — Office 2021Microsoft — Office 2024

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-55057",
  "cveTags": [],
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-14T19:09:37.476969Z"
        }
      }
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          "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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  },
  "affected": [
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      "affectedData": [
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          "versions": [
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          "versions": [
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              "versionType": "custom"
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  ],
  "published": "2026-07-14T18:18:17.953",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55057",
      "tags": [
        "Vendor Advisory",
        "Patch"
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose information locally."
    }
  ],
  "lastModified": "2026-07-16T14:40:40.007",
  "configurations": [
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}