CVE-2026-50521
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2026-50521 is fixed in 4 products on 2 platforms, first by Microsoft Edge 149.0.4022.69, released June 12, 2026. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
8.3
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0082
57th percentile
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Microsoft Edge | 149.0.4022.69 | Microsoft Edge 149.0.4022.69 | Jun 12, 2026 |
| Microsoft Edge Beta | 151.0.4129.59 | Microsoft Edge Beta 151.0.4129.59 | Jul 31, 2026 |
| Microsoft Edge Dev | 152.0.4167.0 | Microsoft Edge Dev 152.0.4167.0 | Jul 20, 2026 |
| Microsoft Edge WebView2 Runtime | 149.0.4022.69 | Microsoft Edge WebView2 Runtime 149.0.4022.69 | Jun 12, 2026 |
| macOS | |||
| Microsoft Edge | 149.0.4022.80 | Microsoft Edge 149.0.4022.80 | Jun 17, 2026 |
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