Vulnerability in Microsoft Edge (Chromium-based)
CVE-2026-55945
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Edge (Chromium-based) allows an authorized attacker to disclose information locally.
Vulnerability class: Race Condition
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Microsoft Edge (Chromium-based) — versions 1.0.0.0
Weakness classification (CWE)
References
- secure@microsoft.com (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-55945?
- CVE-2026-55945 is a medium-severity vulnerability in Microsoft Edge (Chromium-based), classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.2/10. Published 2026-07-03.
- How severe is CVE-2026-55945?
- Medium severity. CVSS v3 base score is 4.2 out of 10.