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CVE-2026-85046: Google Chromium V8 Type Confusion Vulnerability

Google Chromium V8 · in CISA KEV since 2026-09-04

2026-09-04added to KEV

2026-09-18federal remediation due date

1.46%EPSS exploit probability (30 days) 72.5th percentile

8.8 HIGHCVSS 3.1

Unknownknown ransomware use

1days from NVD publication to KEV

What it is

Google Chromium V8 contains a type confusion vulnerability that allows a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Required action (CISA)

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.

CWE	CWE-843
CVSS vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`
NVD published	2026-09-03 (Analyzed)

Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2026-85046.json · all KEV CVEs

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