Microsoft Edge (Chromium-based) Spoofing Vulnerability

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
The attacker must correctly craft convincing spoofed UI chrome, time the full-screen entry, and rely on user perception. While the exploit triggers reliably after a gesture, successful deception depends on careful social engineering and realistic mimicking of browser UI.

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
The user would need to click on a specially crafted URL that could present a popup box requesting additional user input.

How could an attacker exploit this vulnerability via the Network?
An attacker could host a specially crafted website designed to exploit the vulnerability through Microsoft Edge and then convince a user to view the website. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email.

What is the version information for this release?
150.0.4078.48: 150.0.4078.48, 07/03/2026: 07/03/2026, 150.0.7871.47: 150.0.7871.47

Security updates
150.0.4078.48 — https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security