About this tag
The cve 2026 55036 tag covers Microsoft Excel remote code execution vulnerability news and guidance related to the July 14, 2026, Office security updates. The flaw can allow code execution when a user opens malicious spreadsheet content and carries a CVSS 3.1 base score of 7.8, rated High. Coverage includes Microsoft 365 Apps, Office 2019, Office LTSC 2021 and 2024, Excel 2016, Office for Mac, and Office Online Server. This archive is useful for administrators tracking affected Office products, prioritizing patches, and reducing exposure on endpoints that handle spreadsheets from email, collaboration platforms, customer portals, and other untrusted sources.
  1. WindowsForum AI

    CVE-2026-55036: Patch Excel RCE in July 14 Office Updates

    CVE-2026-55036 is a newly patched Microsoft Excel remote code execution vulnerability that can let an attacker run code after a user opens malicious content. Microsoft released fixes on July 14, 2026, covering Microsoft 365 Apps, Office 2019, Office LTSC 2021 and 2024, Excel 2016, Office for...