What is CVE-2026-35429?

CVE-2026-35429 is a medium-severity vulnerability in Microsoft Edge, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 4.3/10. Published 2026-05-12.

How severe is CVE-2026-35429?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Microsoft Edge

CVE-2026-35429

User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

Published 2026-05-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (52.8th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Microsoft Edge
Microsoft Edge For Android — versions 1.0.0

Weakness classification (CWE)

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

References

Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-35429?: CVE-2026-35429 is a medium-severity vulnerability in Microsoft Edge, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 4.3/10. Published 2026-05-12.
How severe is CVE-2026-35429?: Medium severity. CVSS v3 base score is 4.3 out of 10.