CVE-2026-113245 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in DevTools in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified as CVE-2024-9366 represents a critical memory corruption flaw within the DevTools component of Google Chrome, specifically affecting versions prior to 156.0.8078.47. This security defect allows for arbitrary code execution inside the browser's sandbox environment when an attacker successfully lures a user into visiting a maliciously crafted HTML page. The severity is classified as Low by Chromium standards, yet the potential impact on system integrity remains significant due to the nature of memory corruption vulnerabilities which can often be chained with other exploits to achieve higher privilege levels or bypass security controls.
At its core, this vulnerability stems from improper handling of memory operations within the DevTools subsystem. Memory corruption issues typically arise when a program writes data beyond the boundaries of allocated memory buffers, overwrites adjacent memory structures, or uses freed memory pointers without proper validation. In the context of Chrome's architecture, such flaws can lead to heap overflow conditions that allow an attacker to manipulate internal data structures used by the browser engine. By crafting specific HTML content containing malicious JavaScript or embedded objects, a remote adversary can trigger these erroneous memory operations during the rendering process. The DevTools component, while primarily intended for debugging and development purposes, is often integrated into the main browser interface and shares critical resources with the core browsing context, thereby expanding the attack surface available to potential exploiters.
The operational impact of this vulnerability centers on the ability to execute arbitrary code within the sandboxed environment of Chrome. Modern browsers utilize a multi-process architecture where each tab or site runs in an isolated sandbox to limit the damage caused by successful exploits. However, if memory corruption allows for control flow hijacking through techniques such as return-oriented programming (ROP) or direct shellcode injection, an attacker can potentially escape this isolation layer. This could lead to unauthorized access to sensitive user data stored locally on the device, including cookies, saved passwords, and browsing history. Furthermore, successful exploitation might enable further lateral movement within a network if the compromised browser instance is used as a pivot point for additional attacks against internal resources.
From a classification perspective, this vulnerability aligns with CWE-120 Buffer Overflow without bounds check or CWE-787 Out-of-bounds Write depending on the specific memory manipulation technique employed. These categories highlight the fundamental failure in input validation and boundary checking that characterizes many high-severity software defects. In terms of offensive security frameworks like MITRE ATT&CK, this exploit scenario maps to techniques involving client-side code execution such as T1059 Command and Scripting Interpreter or potentially T1203 Exploitation for Client Execution if the payload is delivered via a drive-by download mechanism facilitated by the crafted HTML page. Understanding these mappings helps security teams prioritize remediation efforts based on known adversary behaviors and common exploitation patterns observed in the wild.
Mitigation strategies primarily involve immediate patching to version 156.0.8078.47 or later, where Google has addressed the underlying memory management errors within DevTools. Organizations should ensure that automated update mechanisms are enabled for all Chrome installations across their endpoints to minimize exposure windows. Additionally, implementing strict Content Security Policy (CSP) headers can help mitigate some aspects of client-side code execution by restricting the sources from which scripts and other resources are loaded. Network-level defenses such as web application firewalls may also detect and block requests containing known malicious payloads associated with this type of exploit attempt. Continuous monitoring for anomalous browser behavior or unexpected network connections originating from Chrome processes can provide early warning indicators of potential exploitation attempts in environments where patching cannot be applied immediately.