CVE-2026-20942 — MEDIUM (4.3)

Vulnerability 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 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Related Weaknesses (CWE)

CWE-1021

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20942

FAQ

What is CVE-2026-20942?

CVE-2026-20942 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Improper restriction of rendered ui layers or frames in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

How severe is CVE-2026-20942?

CVE-2026-20942 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-20942?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.