CVE-2026-85046

Chromium: CVE-2026-85046 Type confusion in V8

CVE-2026-85046 is fixed in 9 products on 3 platforms, first by Google Chrome Dev (EXE) 153.0.7979.3, released July 31, 2026. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on September 4, 2026. Patch Radar priority: Patch now.

Patch nowCISA KEVFixed on 3 platforms

CVSS

8.8

high

Exploitation

Exploited

Reported by the vendor

CISA KEV

Sep 4, 2026

Federal due date Sep 18, 2026

EPSS

0.0181

78th 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/2026">Google Chrome Releases</a> for more information.</p> <p>Google is aware that an exploit for CVE-2026-85046 exists in the wild.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
Google Chrome (EXE)	152.0.7977.83	Google Chrome (EXE) 152.0.7977.83	Sep 3, 2026
Google Chrome Beta (EXE)	153.0.8010.5	Google Chrome Beta (EXE) 153.0.8010.5	Aug 20, 2026
Google Chrome Dev (EXE)	153.0.7979.3	Google Chrome Dev (EXE) 153.0.7979.3	Jul 31, 2026
Microsoft Edge	152.0.4191.66	Microsoft Edge 152.0.4191.66	Sep 4, 2026
Microsoft Edge Beta	153.0.4234.6	Microsoft Edge Beta 153.0.4234.6	Aug 27, 2026
Microsoft Edge Dev	153.0.4224.0	Microsoft Edge Dev 153.0.4224.0	Aug 17, 2026
Microsoft Edge WebView2 Runtime	152.0.4191.62	Microsoft Edge WebView2 Runtime 152.0.4191.62	Sep 2, 2026
macOS
Google Chrome	152.0.7977.83	Google Chrome 152.0.7977.83	Sep 2, 2026
Microsoft Edge	152.0.4191.62	Microsoft Edge 152.0.4191.62	Sep 2, 2026
Linux
chromium · Debian 12.15 (bookworm)	152.0.7977.82-1~deb12u1	DEBIAN-CVE-2026-85046	Sep 6, 2026
chromium · Debian 13.5 (trixie)	152.0.7977.82-1~deb13u1	DEBIAN-CVE-2026-85046	Sep 6, 2026
chromium · Debian 14	152.0.7977.82-1	DEBIAN-CVE-2026-85046	Sep 6, 2026
chromium · opensuse-leap 16.0	152.0.7977.82-bp160.1.1	OPENSUSE-SU-2026:21799-1	Nov 7, 2026

Details

Published
September 3, 2026
Weakness
CWE-843: Type confusion
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85046

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