Chrome: Type Confusion in V8 engine (CVE-2025-8010) #shorts

Summary

Welcome to today’s security briefing. We’re talking about CVE-2025-8010, a high-severity type confusion flaw in the V8 JavaScript engine used by Google Chrome. Discovered in July 2025, it allows a remote attacker to trigger heap corruption simply by luring a user to a crafted HTML page.

Product details

This issue affects Google Chrome versions prior to 138.0.7204.168. Major Linux distributions have already rolled out patches: Debian published a security advisory for Chromium-based browsers, Fedora 41 updated Chromium to 138.0.7204.168 to fix CVE-2025-8010 (and CVE-2025-8011), and Fedora 42 likewise issued a critical security update.

Vulnerability type summary

CVE-2025-8010 is classified as a Type Confusion vulnerability. In essence, the V8 engine mismanages internal object types during JavaScript execution, leading to unexpected memory access patterns and potential heap corruption.

Details of the vulnerability

V8’s type system error can be triggered by a specially crafted HTML page. When Chrome’s JavaScript parser encounters the malicious code, it can corrupt heap memory, opening the door to arbitrary code execution, denial of service, or information disclosure. An attacker only needs to host the page; no additional privileges are required. Chromium’s security team rated the severity as High.

Conclusion

To protect yourself, update Google Chrome or any Chromium-based browser to version 138.0.7204.168 or later. Linux users should apply the latest Debian or Fedora security patches immediately. Staying current with browser updates is the best defense against these kinds of remote exploits.

Watch the full video on YouTube: CVE-2025-8010

Remediation and exploitation details

This chain involves the following actors

  • Remote attacker: Malicious actor

This following systems are involved

  • Google Chrome (Web browsing): Vulnerable client

Attack entry point

  • Crafted HTML page: A specially constructed web page that triggers the type confusion in the V8 JavaScript engine when parsed

Remediation actions

End user
Upgrade Google Chrome to version 138.0.7204.168 or later
Google Chrome
System administrator
Apply the provided Debian or Fedora security updates
Affected Linux distributions

Exploitation actions

Deliver crafted HTML to victim

Remote attacker
Host and distribute a malicious web page containing JavaScript that triggers the vulnerability
Google Chrome
Examples:
  • Sending a phishing email with a link to the page
  • Embedding the page in a compromised advertisement

Type confusion in V8 optimizing compiler

Remote attacker
Trigger the type confusion by executing specific JavaScript functions that confuse object type checks in the V8 engine
Google Chrome
Examples:
  • Calling Array.prototype.concat with manipulated array maps
  • Using Function.prototype.call with invalid type coercion

Heap exploitation

Remote attacker
Exploit heap corruption to achieve arbitrary memory read and write primitives
Google Chrome
Examples:
  • Overwriting object pointers
  • Leaking function pointer addresses

Code execution

Remote attacker
Chain the memory primitives to bypass sandbox restrictions and execute arbitrary code within the browser process
Google Chrome
Examples:
  • Injecting shellcode into JIT memory
  • Hijacking return addresses for a return-oriented programming chain

Related Content

NOTE: The following related content has not been vetted and may be unsafe.

CVE database technical details

CVE ID
CVE-2025-8010
Description
Type Confusion in V8 in Google Chrome prior to 138.0.7204.168 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Provider
Chrome
CWE / problem types
Type Confusion
Affected Software Versions
Google:Chrome:[{'version': '138.0.7204.168', 'status': 'affected', 'lessThan': '138.0.7204.168', 'versionType': 'custom'}]
Date Published
2025-07-22T21:11:18.002Z
Last Updated
2025-07-25T03:55:15.412Z