CVE-2026-19166

CVE-2026-19166 Use after free in Web Authentication

CVE-2026-19166 is fixed in 9 products on 3 platforms, first by Google Chrome Dev (EXE) 152.0.7928.2, released July 3, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

UrgentFixed on 3 platforms

CVSS

9.6

critical

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0039

33rd percentile

<p>This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see <a href="https://chromereleases.googleblog.com/2025">Google Chrome Releases</a> for more information.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
Google Chrome (EXE)	151.0.7922.109	Google Chrome (EXE) 151.0.7922.109	Aug 6, 2026
Google Chrome Beta (EXE)	152.0.7977.8	Google Chrome Beta (EXE) 152.0.7977.8	Jul 30, 2026
Google Chrome Dev (EXE)	152.0.7928.2	Google Chrome Dev (EXE) 152.0.7928.2	Jul 3, 2026
Microsoft Edge	151.0.4129.78	Microsoft Edge 151.0.4129.78	Aug 10, 2026
Microsoft Edge Beta	152.0.4191.51	Microsoft Edge Beta 152.0.4191.51	Aug 26, 2026
Microsoft Edge Dev	152.0.4167.0	Microsoft Edge Dev 152.0.4167.0	Jul 20, 2026
Microsoft Edge WebView2 Runtime	151.0.4129.78	Microsoft Edge WebView2 Runtime 151.0.4129.78	Aug 10, 2026
macOS
Google Chrome	151.0.7922.109	Google Chrome 151.0.7922.109	Aug 5, 2026
Microsoft Edge	151.0.4129.78	Microsoft Edge 151.0.4129.78	Aug 9, 2026
Linux
chromium · Debian 12.15 (bookworm)	151.0.7922.108-1~deb12u1	DEBIAN-CVE-2026-19166	Aug 9, 2026
chromium · Debian 13.5 (trixie)	151.0.7922.108-1~deb13u1	DEBIAN-CVE-2026-19166	Aug 9, 2026
chromium · Debian 14	151.0.7922.108-1	DEBIAN-CVE-2026-19166	Aug 9, 2026
chromium · opensuse-leap 16.0	151.0.7922.173-bp160.1.1	OPENSUSE-SU-2026:21624-1	Nov 7, 2026

Details

Published
August 6, 2026
Weakness
CWE-416: Use after free
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-19166

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