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Microsoft Security Response CenterCVE-2026-20942

Microsoft Edge (Chromium-based) Spoofing Vulnerability

LowVendor CVSS 4.3 / 10 1 CVE Published Oct 27, 2026 at 7:00 AM UTC

Summary

Improper restriction of rendered ui layers or frames in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

Products covered

  • Microsoft Edge (Chromium-based)

Remediation

Release Notes

Vendor-listed fixes

  • 156.0.4314.42

CVEs in this advisory 1

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.