SummaryDouble free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.RemediationInventory every Microsoft Edge Chromium deployment, including staging.Upgrade Microsoft Edge Chromium to 154.0.4258.37.Confirm the running version after the upgrade.ReferencesPatchhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85890