cve 2026 58289

The cve 2026 58289 tag covers Microsoft Edge security reporting around a critical Chromium-based remote code execution vulnerability caused by type confusion. Microsoft disclosed the issue on July 3, 2026, and identified Edge versions before 150.0.4078.48 as affected. The available coverage focuses on the July 2 Stable Channel update as the practical fix and on the limited public detail surrounding the vulnerability’s exploit path. For administrators and enterprise IT teams, the central takeaway is to prioritize updating Edge to version 150.0.4078.48 or later rather than waiting for a more detailed explanation of how the flaw may be exploited.