CVE-2025-21404

Name: CVE-2025-21404
Creator: NVD / NIST
Published: 2025-02-06T23:15:09.7+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.99%

Last modified Jun 17, 2026

CVE-2025-21404 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Microsoft Edge (Chromium-based) Spoofing Vulnerability. EPSS estimates a 0.99% chance of exploitation in the next 30 days.

Description

Microsoft Edge (Chromium-based) Spoofing Vulnerability

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS Probability

0.99%

58.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Microsoft	Edge Chromium	< 133.0.3065.51

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21404Vendor Advisory

Timeline

Published: Feb 6, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-21404?

Microsoft Edge (Chromium-based) Spoofing Vulnerability

How severe is CVE-2025-21404?

CVE-2025-21404 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.99% probability of exploitation in the next 30 days.

How do I fix CVE-2025-21404?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-21404?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST