CVE-2026-57980

Microsoft Edge (Chromium-based) Tampering Vulnerability

CVE-2026-57980 is fixed in 4 products on 2 platforms, first by Microsoft Edge 150.0.4078.80, released July 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

RoutineFixed on 2 platforms

CVSS

5.4

Important

Exploitation

None reported

Exploitation Unlikely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0039

33rd percentile

<p>Authentication bypass using an alternate path or channel in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
Microsoft Edge	150.0.4078.83	Microsoft Edge 150.0.4078.83	Jul 17, 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	150.0.4078.83	Microsoft Edge WebView2 Runtime 150.0.4078.83	Jul 17, 2026
macOS
Microsoft Edge	150.0.4078.80	Microsoft Edge 150.0.4078.80	Jul 15, 2026

Details

Published
July 16, 2026
Weakness
Authentication Bypass Using an Alternate Path or Channel
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57980

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