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Microsoft Security Response CenterCVE-2026-70339

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

Read the vendor bulletin Get alerts for Microsoft Edge (Chromium-based)
5.4CVSS out of 10High severity
Scope

What the vendor says is affected

  • Microsoft Edge (Chromium-based)

Versions the vendor lists as fixed

  • 151.0.4129.78
Next step

What the vendor recommends

Release Notes

Review the complete instructions on the vendor's site
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.

    • The vendor changed its remediation guidance.
Timeline

When this advisory changed

  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.

Vulnerabilities

CVEs named in this advisory

CVE-2026-70339View CVSS, KEV, EPSS, and threat context
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