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Microsoft Security Response CenterCVE-2026-66314

Microsoft Edge (Chromium-based) Information Disclosure Vulnerability

HighVendor CVSS 6.5 / 10 1 CVE Published Jul 31, 2026 at 7:00 AM UTC

Summary

Time-of-check time-of-use (toctou) race condition in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.

Products covered

  • Microsoft Edge (Chromium-based)

Remediation

Release Notes

Vendor-listed fixes

  • 151.0.4129.59

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.