Vulnerability in Microsoft Edge Chromium
CVE-2026-42891
User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Microsoft Edge Chromium
- Microsoft Edge For Android — versions 1.0.0
Weakness classification (CWE)
References
- Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-42891?
- CVE-2026-42891 is a medium-severity vulnerability in Microsoft Edge Chromium, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 6.5/10. Published 2026-05-12.
- How severe is CVE-2026-42891?
- Medium severity. CVSS v3 base score is 6.5 out of 10.