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CVE-2026-80085

Status: AnalyzedHigh (8.8)—

Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Vector CVSS con UI:R (interacción del usuario) indica ejecución en cliente al abrir documento Word preparado. Heap overflow permite ejecución arbitraria de código.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Affected technologies (6)

CWEs

References

Raw JSON (NVD)

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{
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          "options": [
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            },
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          ],
          "version": "2.0.3",
          "timestamp": "2026-09-09T04:22:49.266509Z"
        }
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          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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          "vendor": "Microsoft",
          "product": "Microsoft Word 2016",
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              "version": "16.0.1",
              "lessThan": "16.0.5569.1000",
              "versionType": "custom"
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          ],
          "platforms": [
            "32-bit Systems",
            "x64-based Systems"
          ]
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  ],
  "published": "2026-09-08T18:20:50.870",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80085",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
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          "lang": "en",
          "value": "CWE-122"
        }
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  "descriptions": [
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      "lang": "en",
      "value": "Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network."
    }
  ],
  "lastModified": "2026-09-17T20:18:35.263",
  "configurations": [
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}