CVE-2026-40416

MEDIUM

Published May 12, 2026 Modified May 18, 2026 CWE-451

Description

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

CVSS v3.1 Score

4.3

MEDIUM

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

EPSS — Exploit Prediction

0.0004

Probability of exploitation

0.13%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-451 CWE-451

Affected Products

Vendor	Product	Versions
microsoft	edge_chromium	< 148.0.3967.55

References

Advisories & Patches

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40416

Frequently Asked Questions

What is CVE-2026-40416? +

User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-40416? +

CVE-2026-40416 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0004, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-40416? +

CVE-2026-40416 affects products from microsoft, specifically: edge_chromium. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-40416? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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