CVE-2026-20942
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Microsoft Edge Spoofing via UI Layer Restriction Bypass
Vulnerability report for CVE-2026-20942, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-29
Last updated on: 2026-10-29
Assigner: Microsoft Corporation
Description
Description
Improper restriction of rendered ui layers or frames in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) | 1.0.0.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-1021 | The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain. |
