---
id: "CVE-2022-4262"
kind: "vulnerability"
aliases: ["CVE-2022-4262"]
title: "Type confusion in V8 in Google Chrome prior to 108.0.5359.94 allowed a remote attacker to potentially exploit heap\u2026"
severity: "high"
cvss: 8.8
epss: null
exploited: true
status: "open"
category: "runtime"
products: [{"name": "Google Chromium V8", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "google chrome", "fixed": ["108.0.5359.94"], "affected": "< 108.0.5359.94", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["browsers", "chrome", "chromium", "edge", "exploited", "opera", "runtime"]
not_affected_if: ["already-patched-browser"]
published_at: "2022-12-02T21:15:12+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T22:29:04+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-4262", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4262", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# Type confusion in V8 in Google Chrome prior to 108.0.5359.94 allowed a remote attacker to potentially exploit heap…

A type confusion bug in the V8 JavaScript engine used by Chromium lets a remote attacker corrupt heap memory by serving a crafted HTML page. Exploitation in the wild is confirmed by CISA's KEV catalog, and an attacker gets code execution in the browser process context.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Google Chromium V8 affected ? fixed ?
- vendor:google chrome affected < 108.0.5359.94 fixed 108.0.5359.94

## How to check

Open chrome://version (or edge://version, opera://about) and compare the version against the fixed release in the vendor advisory.

## Fix

Update Google Chrome, Microsoft Edge, Opera or other Chromium-based browsers to the vendor's patched release.
CISA required action: apply updates per vendor instructions.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-4262
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2022-4262

## From the sources

Google Chromium V8 Engine contains a type confusion vulnerability that allows a remote attacker to potentially exploit heap corruption 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.

CISA required action: Apply updates per vendor instructions.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_