CVE-2026-17725 in Chrome
Summary
by MITRE • 07/30/2026
Type Confusion in V8 in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 07/30/2026
This vulnerability represents a critical type confusion flaw within the V8 JavaScript engine that powers Google Chrome's browser functionality. The issue stems from improper handling of object types during runtime execution, specifically when the engine fails to properly validate type information between different object instances. Such type confusion vulnerabilities occur when a program incorrectly handles data types, leading to situations where an object intended to be one type is treated as another type during memory operations.
The technical exploitation of this vulnerability leverages the sandboxing mechanism that Chrome employs to isolate web content from the underlying operating system. Attackers can craft malicious HTML pages that manipulate V8's type system through carefully constructed JavaScript code, causing the engine to misinterpret object types and subsequently execute arbitrary code within the restricted browser environment. This represents a sophisticated attack vector that bypasses traditional security boundaries by exploiting fundamental runtime type handling mechanisms rather than targeting specific API endpoints or memory corruption vulnerabilities.
The operational impact of this vulnerability extends beyond simple privilege escalation as it allows remote attackers to execute malicious code without requiring user interaction or elevated privileges. The Chromium security severity rating of High reflects the dangerous nature of the flaw, which can be exploited through standard web browsing activities. Attackers can deliver payloads through compromised websites, phishing campaigns, or malicious advertisements, making this vulnerability particularly dangerous in real-world scenarios where users frequently browse untrusted content.
This vulnerability aligns with several CWE categories including CWE-129 and CWE-787, which address improper input validation and out-of-bounds writes respectively. The ATT&CK framework categorizes this under T1059.007 for JavaScript execution and potentially T1548.001 for privilege escalation through sandbox bypass techniques. Organizations should implement immediate patch management procedures to upgrade Chrome to version 151.0.7922.72 or later, while also considering network-based protections such as web application firewalls and content security policies to limit potential exploitation vectors. Additionally, browser hardening configurations and user education regarding suspicious website interactions can provide additional defense layers against this class of attacks that target fundamental runtime engine components rather than surface-level user interface elements.