PT-2026-58591 · Microsoft · 365 Apps For Enterprise+5

Publicado 2026-07-14 · Atualizado 2026-07-14 · CVE-2026-56156

NVD

CVSS v3.1

7.8

Alta

Vetor base

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Correção

Heap Based Buffer Overflow

Enumeração de Fraquezas

CWE-122

Identificadores relacionados

CVE-2026-56156

Produtos afetados

365 Apps For Enterprise

Office 365 For Mac

Office Ltsc 2021

Office Ltsc 2024

Office Ltsc For Mac 2021

Office Ltsc For Mac 2024

Referências · 2

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56156 · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2026-56156 · Nota de Segurança