Security Update Advisory for Microsoft Edge Browser (Version 152.0.4191.53)
Aug 28 2026
Microsoft has released security updates for Microsoft Edge (Chromium-based) and versions of Microsoft Edge for iOS prior to 152.0.4191.53.
This update addresses 0 Critical and 4 Important vulnerabilities specific to Microsoft Edge, as well as numerous vulnerabilities classified by the Chromium project as Critical, High, Moderate, and Low.
Affected Versions include Microsoft Edge (Chromium-based) prior to version 152.0.4191.53 And Microsoft Edge for iOS prior to version 152.0.4191.53.
Key vulnerabilities include an information disclosure vulnerability (CVE-2026-58616) in Copilot Chat (Microsoft Edge), a security feature bypass vulnerability (CVE-2026-70309) in Microsoft Edge (Chromium-based), an information disclosure vulnerability (CVE-2026-62904), a spoofing vulnerability (CVE-2026-66324), and remote code execution vulnerabilities (CVE-2026-66323, CVE-2026-66798, CVE-2026-72984, CVE-2026-70341).
Additionally, ANGLE, Aura, Chromecast, Mobile, Safe Browsing, Views, Accessibility, Autofill, Bluetooth, Browser, Canvas, Chromoting, Crashpad, Dawn, Extensions, FedCM, FileSystem, GPU, Media, Paint, Passwords, Performance, Platform, ReadAloud, Sandbox, Script, Tint, Transactions Platform, USB, V8, WebAppInstalls, WebGL, WebRTC, WebView, WebXR, Workers, and more—a wide range of vulnerabilities, including memory reuse after deallocation, type confusion, out-of-bounds reads/writes, buffer overflows, authorization errors, information disclosure, and race conditions, have been fixed.
Microsoft released the patches via the Microsoft Edge Stable channel update on August 27, 2026, and the Microsoft Edge mobile update on August 31, 2026.
Users should update to Microsoft Edge (Chromium-based) version 152.0.4191.53 Or later and Microsoft Edge for iOS version 152.0.4191.53 Or later.
