CVE-2025-21262: Microsoft Edge (Chromium-based) Spoofing Vulnerability

According to the CVSS metric, Confidentiality and Integrity are rated as Low and Availability is None (C:L, I:L, A:N). What does that mean for this vulnerability?

An attacker is only able to comprise files that they were allowed access to as part of their initial privilege but cannot affect the availability of the browser.