Microsoft Edge CVE-2026-40416 Security Bypass Vulnerability Advisory

Summary

CERT-FR issued an advisory on April 24, 2026 regarding CVE-2026-40416, a security policy bypass vulnerability discovered in Microsoft Edge. The vulnerability allows an attacker to circumvent security policies in affected systems. Organizations using Microsoft Edge should consult the Microsoft security bulletin released on April 14, 2026 for available patches and remediation guidance.

About this source

CERT-FR is the French government's national cybersecurity incident response team, run by the ANSSI. Their advisory feed publishes vulnerability disclosures, active exploitation warnings, and emergency patching guidance for software in widespread enterprise use: browsers, hypervisors, ERP systems, network equipment, file transfer products. Around 180 advisories a month. The advisories are written in French but cover the same vulnerability universe as CISA, NCSC-UK, BSI's CERT-Bund, and JPCERT, often hours earlier on European-headquartered vendors. Watch this if you patch enterprise software, run a SOC, write detection content, or track Schneider, Dassault, OVH, Atos, or any French-vendor advisory faster than English-language sources will surface it. GovPing publishes each advisory with the affected vendor, severity, and CERT-FR link.

What changed

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