CVE-2026-113241 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in Toolbar in Google Chrome on on Android prior to 156.0.8078.47 allowed a remote attacker to potentially 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 described involves a memory corruption flaw within the Toolbar component of Google Chrome for Android, specifically affecting versions prior to 156.0.8078.47. This defect represents a critical failure in how the browser handles internal data structures during rendering or user interaction with toolbar elements. Memory corruption vulnerabilities are among the most dangerous classes of software defects because they can lead to undefined behavior that attackers exploit to gain unauthorized control over application execution flow. In this specific instance, the flaw resides within the Toolbar module, which is responsible for managing UI elements such as address bars, navigation buttons, and menu options on mobile devices. The severity is classified as Low by Chromium security standards, likely due to the complexity required to trigger the exploit or the effectiveness of existing sandboxing mechanisms in Chrome that limit the impact of successful exploitation.
The technical mechanism behind this vulnerability allows a remote attacker to execute arbitrary code within the browser's sandbox environment through a crafted HTML page. This indicates that an attacker can host malicious web content designed to manipulate memory states when the Toolbar processes specific inputs or renders complex layouts. By triggering the memory corruption, the attacker gains the ability to overwrite critical data structures such as function pointers or return addresses. Although Chrome employs robust sandboxing techniques like site isolation and process separation to contain potential breaches, a successful exploit of this vulnerability could allow an attacker to escape these constraints partially or fully, depending on how effectively they can chain this memory corruption with other primitives to achieve arbitrary code execution outside the restricted context.
From an operational perspective, the impact of this vulnerability is significant despite its low severity rating in terms of ease of exploitation. If a user visits a malicious website containing the crafted HTML payload, their device could be compromised without any additional interaction beyond loading the page. This scenario poses risks including data theft, installation of malware, or use of the infected device as part of a botnet. The presence of such vulnerabilities highlights the ongoing challenges in maintaining secure codebases for complex applications like web browsers that handle untrusted content from the internet daily. Users running affected versions are at risk until they update to version 156.0.8078.47 or later, which includes patches addressing this specific memory management issue within the Toolbar component.
Mitigation strategies primarily involve ensuring timely updates of the Google Chrome application on Android devices. Administrators and users should verify that their browsers are updated to the latest stable release where these security fixes have been applied. Additionally, enabling automatic update features can help prevent exposure to known vulnerabilities by reducing the window of time during which a device remains vulnerable after a patch is released. From a defensive standpoint, deploying mobile application control solutions or using browser extensions that restrict script execution on untrusted sites can provide an additional layer of protection against drive-by download attacks and malicious web content exploitation attempts.
This vulnerability aligns with Common Weakness Enumeration (CWE) categories such as CWE-120 Buffer Overflow without null termination check, CWE-787 Out-of-bounds Write, or CWE-416 Use After Free, depending on the exact nature of the memory corruption identified by Chromium engineers. In terms of MITRE ATT&CK framework mapping, this exploit technique falls under Tactic Execution with techniques related to Command and Scripting Interpreter via Web Shell or potentially Tactic Privilege Escalation if sandbox escape is achieved. Understanding these mappings helps security professionals categorize similar incidents and apply appropriate detection rules within endpoint protection platforms that monitor for suspicious memory access patterns or unusual process behavior originating from browser processes on mobile operating systems.