CVE-2026-78509 in Office

Sumário

de MITRE • 08/09/2026

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

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• Responsável: Microsoft
• Reservar: 24/08/2026
• Divulgação: 08/09/2026
• Moderação: aceite
• Entrada: VDB-400856
• CPE: pronto
• CWE: CWE-122 (confirmado)
• CVSS: 9.8 (CNA)
• EPSS: 0.00000
• KEV: não
• Atividades: muito baixo
• Sector: Industry, Chemical, ...

Fontes

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-78509
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-78509
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-78509/