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CVE-2026-41100

Estado: AnalizadaMedia (4.4)—

Improper access control in M365 Copilot allows an authorized attacker to perform spoofing 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 (1)

Microsoft — 365 Copilot

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-41100",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-41100",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-13T14:34:33.636278Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secure@microsoft.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.4,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "Microsoft",
          "product": "Microsoft 365 Copilot for Android",
          "versions": [
            {
              "status": "affected",
              "version": "1.0",
              "lessThan": "16.0.19822.20190",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Excel for Android",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.0.0",
              "lessThan": "16.0.19822.20190",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Loop for Android",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.0",
              "lessThan": "16.0.19822.20190",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft OneNote for Android",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.1",
              "lessThan": "16.0.19822.20190",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft PowerPoint for Android",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.0.0",
              "lessThan": "16.0.19822.20190",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Word for Android",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.0.0",
              "lessThan": "16.0.19822.20190",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-05-12T18:17:21.507",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41100",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally."
    }
  ],
  "lastModified": "2026-06-17T10:46:10.357",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:android:*:*",
              "vulnerable": true,
              "matchCriteriaId": "71B289C6-6C8F-4217-AA2A-06931EE86372",
              "versionEndExcluding": "16.0.19822.20190"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}