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How CVE-2025-6554 Works
This vulnerability arises due to type confusion in Chrome’s V8 JavaScript engine. An attacker can craft a malicious HTML page that triggers improper type handling during JavaScript execution. By manipulating objects in memory, the attacker gains arbitrary read/write capabilities, potentially leading to code execution. The flaw occurs when V8 fails to properly validate object types during optimization, allowing memory corruption. This is exploitable when a victim visits a specially crafted webpage using Chrome versions before 138.0.7204.96.
DailyCVE Form
Platform: Google Chrome
Version: <138.0.7204.96
Vulnerability: Type Confusion
Severity: High
Date: 06/30/2025
Prediction: Patch by 07/15/2025
What Undercode Say
v8 --disable-type-confusion-checks chrome://flags/enable-experimental-javascript %CFReadStreamSetClient exploit_chain.js
How Exploit
1. Craft malicious HTML with JS type confusion
2. Trigger V8 optimization bypass
3. Achieve arbitrary R/W primitives
4. Deploy shellcode via RWX memory
Protection from this CVE
Update to Chrome β₯138.0.7204.96
Enable Site Isolation
Disable JavaScript
Impact
Remote Code Execution
Memory Corruption
Browser Compromise
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
