CVE-2026-55039 in Office

Sumário

de MITRE • 14/07/2026

Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

• Responsável: Microsoft
• Reservar: 16/06/2026
• Divulgação: 14/07/2026
• Moderação: aceite
• Entrada: VDB-378830
• CPE: pronto
• CWE: CWE-191 (confirmado)
• CVSS: 5.3 (VulDB)
• EPSS: 0.00000
• KEV: não
• Atividades: muito baixo
• Sector: Hostingprovider, Lawfirm, ...

Fontes

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-55039
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-55039
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-55039/