---
id: "CVE-2019-5825"
kind: "vulnerability"
aliases: ["CVE-2019-5825"]
title: "Out of bounds write in JavaScript in Google Chrome prior to 73.0.3683.86 allowed a remote attacker to potentially\u2026"
severity: "high"
cvss: 6.5
epss: 0.55925
exploited: true
status: "open"
category: "runtime"
products: [{"name": "Google Chromium V8", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "google chrome", "fixed": ["73.0.3683.86"], "affected": "< 73.0.3683.86", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["browser-users", "chromium", "exploited", "google-chrome", "microsoft-edge", "opera", "runtime"]
not_affected_if: ["fully-patched-browser"]
published_at: "2019-11-25T20:15:11+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-2019-5825", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2019-5825", "first_seen_at": "2026-10-23T19:13:45+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-5825", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# Out of bounds write in JavaScript in Google Chrome prior to 73.0.3683.86 allowed a remote attacker to potentially…

A flaw in the V8 JavaScript engine used by Chromium lets an out-of-bounds write corrupt heap memory when a victim loads a crafted HTML page. An attacker can use this to run code inside the browser, and CISA lists it as actively exploited.

_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 < 73.0.3683.86 fixed 73.0.3683.86

## How to check

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

## Fix

Update Google Chrome, Microsoft Edge, Opera and other Chromium-based browsers to a release that includes the vendor fix, per CISA's required action.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-5825
- 2026-10-23T19:13:45+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2019-5825
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2019-5825

## From the sources

Google Chromium V8 Engine contains an out-of-bounds write 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_