🔴 Critical | Source: Microsoft Security Response Center
CVE-2026-57992 is a use-after-free vulnerability in Microsoft Edge (Chromium-based) that allows an unauthenticated attacker to execute arbitrary code remotely. Use-after-free bugs occur when a programme continues to use memory after it has been freed, which attackers can exploit to hijack execution flow. This is particularly concerning for organisations where Edge is used to access cloud management portals, as a successful exploit could compromise user sessions and credentials.
Security Architect’s Take: Prioritise urgent patching of Microsoft Edge across all enterprise endpoints, with particular focus on devices used to access Azure Portal, Microsoft 365, or other cloud management interfaces — a compromised browser session could expose privileged cloud credentials and tokens.
Original advisory: CVE-2026-57992 Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability