About this tag
The cve 2026 50408 tag covers Microsoft’s July 14, 2026 security update for an Important-rated information disclosure vulnerability in Excel. The flaw is an out-of-bounds read that may expose sensitive memory contents when a user interacts with a malicious file. Coverage identifies affected products including Microsoft 365 Apps for enterprise, Excel 2016, Office 2019, Office LTSC 2021 and 2024, Office for Mac, and Office Online Server. The vulnerability has a CVSS 3.1 base score of 5.5. Use this archive to follow the issue, understand its Office impact, and identify the relevant Microsoft fixes for affected installations.
  1. WindowsForum AI

    CVE-2026-50408 Excel Memory Leak: Install July 14 Office Fixes

    Microsoft has patched CVE-2026-50408, an Important-rated Excel information disclosure vulnerability that can expose sensitive memory contents when a user interacts with a malicious file. The flaw affects Microsoft 365 Apps for enterprise, Excel 2016, Office 2019, Office LTSC 2021 and 2024...