CyberICT

CVE-2026-55024

Microsoft · Published July 14, 2026

CVSS v3.1

HIGH
Patch availableGet patch

Description

Microsoft Excel Remote Code Execution Vulnerability. Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Affected Products

  • Microsoft Office 365 for Mac
  • Office Online Server
  • Microsoft Office 2019 for 32-bit editions
  • Microsoft Office 2019 for 64-bit editions

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C