---
id: "CVE-2025-10585"
kind: "vulnerability"
aliases: ["CVE-2025-10585"]
title: "Type confusion in V8 in Google Chrome prior to 140.0.7339.185 allowed a remote attacker to potentially exploit heap\u2026"
severity: "critical"
cvss: 9.8
epss: null
exploited: true
status: "open"
category: "runtime"
products: [{"name": "Google Chromium V8", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "google chrome", "fixed": ["140.0.7339.185"], "affected": "< 140.0.7339.185", "ecosystem": "vendor"}, {"name": "siemens cadra", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["browser", "chrome", "chromium", "electron", "exploited", "runtime"]
not_affected_if: ["managed-hosting"]
published_at: "2025-09-23T00:00:00+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T22:29:05+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-10585", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-10585", "first_seen_at": "2026-10-23T22:29:05+00:00"}]
---

# Type confusion in V8 in Google Chrome prior to 140.0.7339.185 allowed a remote attacker to potentially exploit heap…

Google Chromium's V8 JavaScript and WebAssembly engine has a type confusion bug. Exploitation is confirmed in the wild, and a crafted web page can likely use it to corrupt memory in the browser.

_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 < 140.0.7339.185 fixed 140.0.7339.185
- vendor:siemens cadra affected ? fixed ?

## How to check

Check the installed Chrome or Chromium version (chrome://version) and compare it with the fixed release named in the vendor advisory.

## Fix

Update Google Chrome or Chromium to the patched release named in the Chrome Releases blog; unknown which version the sources name.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-10585
- 2026-10-23T22:29:05+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2025-10585

## From the sources

Google Chromium contains a type confusion vulnerability in the V8 JavaScript and WebAssembly engine.

CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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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_