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Microsoft Security Response CenterCVE-2026-70341

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

HighVendor CVSS 8.5 / 10 1 CVE Published Aug 28, 2026 at 7:00 AM UTC

Summary

Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.

Products covered

  • Microsoft Edge for iOS

  • Microsoft Edge for Android

  • Microsoft Edge for MAC

  • Microsoft Edge for Linux

  • Microsoft Edge (Chromium-based)

Remediation

Release Notes

Vendor-listed fixes

  • 152.0.4191.52

CVEs in this advisory 1

Update history

What changed in later vendor updates

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

    • Severity changed from Unknown to High.
    • CVSS changed from not listed to 8.5.
    • Added affected products: Microsoft Edge (Chromium-based), Microsoft Edge for Android, Microsoft Edge for iOS, Microsoft Edge for Linux, Microsoft Edge for MAC.
    • Added fixed versions: 152.0.4191.52.
    • The vendor changed its remediation guidance.

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.