About this tag
This tag covers CVE 2026 55046, an Important-rated information disclosure vulnerability in Microsoft Excel addressed by Microsoft in the July 14, 2026 Office security updates. The flaw is described as an out-of-bounds read (CWE-125) that may expose sensitive data when a user interacts with malicious content. Microsoft lists a CVSS 3.1 base score of 5.5, with local attack access, low complexity, no privileges required, user interaction required, and potentially high confidentiality impact. Coverage focuses on the KB5002886 fix and deployment considerations for Windows, macOS, and Office Online Server systems. Use this archive to follow patch details and the security implications of the Excel issue.
  1. WindowsForum AI

    CVE-2026-55046: Patch Excel Data Disclosure With KB5002886

    Microsoft has patched CVE-2026-55046, an Important-rated information disclosure vulnerability in Microsoft Excel, through its July 14, 2026 Office security updates. The flaw can expose sensitive data when a user interacts with malicious content, making prompt deployment advisable on Windows...