CVE-2026-113067 in Chrome
Summary
by MITRE • 10/21/2026
Use after free in Chromoting 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 a use-after-free flaw within the Chromoting component of Google Chrome prior to version 156.0.8078.47 represents a critical memory management error that can be leveraged by remote attackers to achieve arbitrary code execution. This specific class of bug occurs when a program continues to use a pointer after the memory it points to has been freed, often leading to undefined behavior such as crashes or, more dangerously, the ability for an attacker to control the contents of the reclaimed memory region. In this instance, the flaw resides in Chromoting, which is Google's technology underlying Chrome Remote Desktop and other remote access features within the browser ecosystem. The presence of this vulnerability indicates a lapse in reference counting or pointer invalidation during the lifecycle management of objects involved in handling remote desktop sessions or related media streams.
From an operational perspective, the severity of this issue is classified as low by Chromium security standards, primarily due to the sandboxing mechanisms inherent in modern web browsers. Google Chrome employs a multi-process architecture where renderer processes are heavily restricted and isolated from the operating system kernel and other sensitive components through strict permissions and capabilities. Consequently, while an attacker can successfully exploit the use-after-free condition via a crafted HTML page hosted on a malicious website or embedded within a compromised site, the resulting code execution is typically confined to the sandboxed environment of the renderer process. This containment significantly limits the immediate impact compared to vulnerabilities that escape the browser's security boundaries directly into the host operating system.
However, even within the sandbox, successful exploitation can lead to significant privacy and integrity compromises. An attacker gaining control over the renderer process could potentially access sensitive data stored locally by Chrome, such as cookies, session tokens, or cached credentials, if those resources are accessible from that context. Furthermore, this vulnerability serves as a potential stepping stone for further attacks. If an additional flaw exists within the browser's security model or if specific configurations weaken sandbox isolation, the initial foothold gained through Chromoting could be escalated to break out of the sandbox entirely, allowing full system compromise. This aligns with common attack patterns observed in advanced persistent threats where browser vulnerabilities are used as entry points for broader network infiltration.
The technical classification of this vulnerability maps directly to CWE-416, Use After Free, which describes situations where a pointer is dereferenced after the memory it references has been deallocated. In terms of offensive security frameworks, such exploitation techniques often fall under MITRE ATT&CK tactic T1203, Exploitation for Client Execution, specifically targeting client software to establish an initial foothold on a target system through social engineering or drive-by download mechanisms involving malicious web content. The requirement for user interaction, typically in the form of visiting a crafted webpage, places this within the context of browser-based exploitation vectors that rely on convincing users to load untrusted HTML content containing exploit code designed to trigger the memory corruption flaw during Chromoting initialization or data processing routines.
Mitigation strategies primarily involve ensuring that all instances of Google Chrome are updated to version 156.0.8078.47 or later, where these memory management issues have been addressed through rigorous patching and improved code review processes. Organizations should enforce automated update policies to minimize the window of exposure for end-users who may inadvertently visit malicious sites. Additionally, users can reduce their risk profile by disabling unnecessary browser extensions that might interact with Chromoting features if remote desktop functionality is not actively required in their workflow. Implementing strict content security policies and utilizing browser hardening tools can further restrict the capabilities available to any code executed within the renderer process, thereby limiting the potential impact even if a vulnerability of this nature were present or undiscovered. Continuous monitoring for anomalous network traffic originating from Chrome processes can also aid in detecting attempts at exploitation that might bypass static defenses.