Open Redirect in Microsoft Edge Chromium
CVE-2025-21401
Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
Vulnerability class: Open Redirect
EPSS: 0.003 (23.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.5 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L.
Affected products
- Microsoft Edge_chromium
- Microsoft Edge (Chromium-based) — versions 1.0.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (vendor-advisory, Patch, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-21401?
- CVE-2025-21401 is a medium-severity vulnerability in Microsoft Edge Chromium, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.5/10. Published 2025-02-15.
- How severe is CVE-2025-21401?
- Medium severity. CVSS v3 base score is 4.5 out of 10.
- Is CVE-2025-21401 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.