What is CVE-2025-21253?

CVE-2025-21253 is a medium-severity vulnerability in Microsoft Edge, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 5.3/10. Published 2025-02-06.

How severe is CVE-2025-21253?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Microsoft Edge

CVE-2025-21253

Microsoft Edge for IOS and Android Spoofing Vulnerability

Published 2025-02-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.012 (68.6th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Microsoft Edge
Microsoft Edge For Android — versions 1.0.0
Microsoft Edge For iOS — versions 1.0.0.0

Weakness classification (CWE)

CWE-451 — User Interface (UI) Misrepresentation of Critical Information

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21253 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-21253?: CVE-2025-21253 is a medium-severity vulnerability in Microsoft Edge, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 5.3/10. Published 2025-02-06.
How severe is CVE-2025-21253?: Medium severity. CVSS v3 base score is 5.3 out of 10.