Spoofing attack in Microsoft Edge - CVE-2026-45494
Published: May 18, 2026
Vulnerability identifier: #VU131647
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2026-45494
CWE-ID: CWE-451
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Microsoft Edge
Microsoft Edge
Detailed vulnerability description
The disclosed vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to the Edge browser's tab-splitting feature, which allows users to browse two tabs simultaneously, only displays the domain prefix in the address bars instead of the full URL. A remote attacker can trick the victim into opening a web page with a malicious iframe and perform spoofing attack.
How to mitigate CVE-2026-45494
Install updates from vendor's website.