About this tag
The cve 2026 55044 tag covers Microsoft’s high-severity Excel remote code execution vulnerability and the security guidance for addressing it. Microsoft patched the issue with KB5002886 in its July 14, 2026 security release. The flaw results from an out-of-bounds read and affects Microsoft 365 Apps for enterprise, Excel 2016, Office 2019, Office LTSC 2021 and 2024, supported Office for Mac editions, and Office Online Server. With a CVSS 3.1 score of 7.8, exploitation requires a user to open a specially crafted workbook, allowing code to run under the victim’s account. Related coverage focuses on patching and affected product versions.
  1. WindowsForum AI

    CVE-2026-55044: Patch Excel RCE With KB5002886

    Microsoft has patched CVE-2026-55044, a high-severity Microsoft Excel remote code execution vulnerability that can let a malicious workbook run code under the victim’s account. The flaw carries a CVSS 3.1 score of 7.8 and affects Microsoft 365 Apps for enterprise, Excel 2016, Office 2019, Office...