🟠 High | Source: Microsoft Security Response Center
CVE-2026-57993 is a server-side request forgery (SSRF) vulnerability in Microsoft Edge (Chromium-based) that allows an unauthenticated attacker to conduct spoofing attacks over a network. SSRF flaws can be exploited to make the affected application issue requests on behalf of the attacker, potentially reaching internal services or cloud metadata endpoints. This is particularly relevant in enterprise environments where Edge is widely deployed and used to access cloud-hosted resources.
Security Architect’s Take: Ensure Microsoft Edge is updated to the patched version via your endpoint management tooling (e.g. Intune or SCCM) and review whether cloud metadata endpoints or internal services are accessible from browser-initiated requests — consider restricting access to sensitive endpoints at the network layer as a defence-in-depth measure.
Original advisory: CVE-2026-57993 Microsoft Edge (Chromium-based) Spoofing Vulnerability