Spoofing Vulnerability in Microsoft Edge by Microsoft
CVE-2026-20942

4.3MEDIUM

Key Information:

Vendor

Microsoft
Status
Microsoft Edge (chromium-based)
Vendor
CVE Published:
29 October 2026

What is CVE-2026-20942?

An improper restriction of rendered UI layers or frames in Microsoft Edge (Chromium-based) creates a security gap that enables unauthorized attackers to spoof content over a network. This flaw can potentially mislead users into interacting with malicious resources, thereby posing significant risks to user data and system integrity.

Affected Version(s)

Microsoft Edge (Chromium-based) 1.0.0.0 < 156.0.4314.42

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.