Chromium CVE-2026-121172: Incorrect authorization
CVE-2026-121172
Summary
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges locally.
Products covered
Microsoft Edge (Chromium-based)
Remediation
Release Notes
Vendor-listed fixes
153.0.4234.46
155.0.4283.45
CVEs in this advisory 1
Update history
What changed in later vendor updates
SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.
- Added fixed versions: 155.0.4283.45.
Updates
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Added to SecurityAlert
We collected the advisory from the official source.
- Updated by Microsoft Security Response Center
The vendor changed the advisory after it was first published.
- Confirmed at the source
Our collector saw this advisory during a later source check.