Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

Summary

Integer overflow or wraparound in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.

Products covered

• Microsoft Edge (Chromium-based)

Remediation

Release Notes

Vendor-listed fixes

• 154.0.4258.62

CVEs in this advisory 1

CVE-2026-88077

Updates

1. Oct 26, 2026 at 7:00 AM UTC
   Published by Microsoft Security Response Center

   The publication date reported by the vendor.

2. Oct 27, 2026 at 3:15 AM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.