CyberICT

CVE-2026-55054

Microsoft · Published July 14, 2026

CVSS v3.1

MEDIUM
Patch availableGet patch

Description

Microsoft Excel Information Disclosure Vulnerability. Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

Affected Products

  • Office Online Server
  • Microsoft Office 2019 for 32-bit editions
  • Microsoft Office 2019 for 64-bit editions
  • Microsoft 365 Apps for Enterprise for 32-bit Systems

CVSS Vector

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