Microsoft Edge (Chromium-based) Webview2 Spoofing Vulnerability

Microsoft Edge Channel Microsoft Edge Version Date Released Based on Chromium Version Stable 123.0.2420.81 4/4/2024 123.0.6312.105/.106/.107 Extended Stable 122.0.2365.120 4/4/2024 122.0.6261.156

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to take additional actions prior to exploitation to prepare the target environment.

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? An attacker must send the user a malicious file and convince them to open it.

According to the CVSS metrics, successful exploitation of this vulnerability could lead to minor loss of confidentiality (C:L), integrity (I:L) and availability (A:N). What does that mean for this vulnerability? There are limited impact to Confidentiality and Integrity and no Avaibility impact from exploiting this vulnerability. An attacker would need to combine this with other vulnerabilities to perform an attack.

According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? The vulnerability is in the web server, but the malicious scripts execute in the victim’s browser on their machine.