CVE-2026-113234 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in ANGLE in Google Chrome 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: High)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified within the ANGLE graphics library, which is integrated into Google Chrome prior to version 156.0.8078.47, represents a critical memory corruption flaw that undermines the browser's sandboxing mechanisms. ANGLE serves as an abstraction layer that translates OpenGL ES API calls into native platform graphics APIs such as DirectX or Metal, enabling web applications and WebGL content to render efficiently across different operating systems. The specific defect involves improper handling of memory operations during the processing of crafted HTML pages containing malicious JavaScript or WebGL shaders. This flaw allows for out-of-bounds writes or use-after-free conditions within the renderer process, which is typically isolated from the rest of the system by Chrome's multi-process architecture and sandboxing policies designed to limit the impact of a compromise.
From a technical perspective, this memory corruption issue falls under Common Weakness Enumeration categories such as CWE-120 Buffer Copy without Checking Size of Input or CWE-416 Use After Free, depending on the exact nature of the heap manipulation involved in the ANGLE implementation. The attacker crafts an HTML page that triggers specific rendering paths within ANGLE where memory allocation and deallocation are not properly synchronized or validated against buffer boundaries. When a victim visits this malicious webpage, the browser processes the graphics commands, leading to the corruption of adjacent memory structures. This corruption can be leveraged to overwrite function pointers or object headers, thereby gaining control over the execution flow within the renderer process. Although Chrome employs various mitigations such as Control Flow Integrity and heap metadata protection, sophisticated exploitation techniques can sometimes bypass these defenses if the vulnerability allows for precise memory layout manipulation.
The operational impact of this vulnerability is severe due to its potential for remote code execution with high severity ratings assigned by Chromium security teams. A successful exploit could allow a remote attacker to execute arbitrary code within the context of the renderer process. While the sandbox restricts direct access to sensitive system resources, achieving code execution in the renderer can serve as a stepping stone for further exploitation. Attackers may attempt to escape the browser sandbox through additional vulnerabilities or by exploiting weaknesses in the interaction between the renderer and other processes such as the GPU process or utility processes. This could ultimately lead to full system compromise, data exfiltration, or installation of persistent malware on the victim's device without any user interaction beyond visiting a malicious website.
This vulnerability aligns with MITRE ATT&CK techniques related to initial access via browser exploitation and privilege escalation through sandbox escape. Specifically, it relates to T1203 Exploitation for Client Execution where attackers use web-based delivery mechanisms like crafted HTML pages to trigger code execution in client software. The presence of such flaws highlights the ongoing challenges in securing complex graphics stacks that bridge high-level web standards with low-level hardware interfaces. To mitigate this risk, users must ensure they are running Google Chrome version 156.0.8078.47 or later where these memory management issues have been addressed through code hardening and stricter validation of input parameters passed to ANGLE functions. Organizations should also enforce automatic update policies for browsers to minimize the window of exposure to such zero-day style vulnerabilities that are actively being exploited in the wild by threat actors targeting enterprise environments.