CVE-2026-40416

MEDIUMNVD 4.34.3—

4.3

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

CVSS v3: 4.3
EG Score: 4.3(high)
EPSS: 12.8%
KEV: Not listed

Published

May 12, 2026

Last Modified

May 18, 2026

Advisory Details (1)

Auto-updated May 18, 2026

Patch available. Sources: microsoft.

microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

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

Vendor Advisories for CVE-2026-40416(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

CVE-2026-40416
Microsoft Security Response Center (MSRC)Spoofing
Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability

Frequently asked(5)

What is CVE-2026-40416?

CVE-2026-40416 is a medium vulnerability published on May 12, 2026. User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

When was CVE-2026-40416 disclosed?

CVE-2026-40416 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on May 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-40416 actively exploited?

CVE-2026-40416 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-40416?

CVE-2026-40416 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2026-40416?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40416, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-40416

Explore →

Is Your Infrastructure Affected by CVE-2026-40416?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2026-40416

📅 Published

🔄 Last Modified

📋 Advisory Details (1)