🔴 Critical | Source: Microsoft Security Response Center
CVE-2026-57988 is a remote code execution vulnerability in Microsoft Edge (Chromium-based) caused by a relative path traversal flaw. An unauthenticated attacker could exploit this over a network to execute arbitrary code on a victim’s machine. This is particularly concerning in enterprise environments where Edge is widely deployed and users may access cloud management portals or internal tooling through the browser.
Security Architect’s Take: Prioritise pushing the patched Edge update across your estate via Intune or your endpoint management tooling immediately, and consider temporarily restricting access to sensitive cloud console URLs (Azure Portal, AWS Console) from unmanaged or unpatched devices using Conditional Access or browser-based device compliance policies.
Original advisory: CVE-2026-57988 Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability