CVE-2026-55945: Microsoft Edge Chromium

Medium severity, CVSS 4.2. EPSS: 0.2% chance of exploitation in the next 30 days.

Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Edge (Chromium-based) allows an authorized attacker to disclose information locally.

Affected products

• Microsoft Edge Chromium: before 150.0.4078.48 (fixed in 150.0.4078.48)

Published 2026-07-03. Last modified 2026-07-07.