CVE-2026-95322 in Chrome
Summary
by MITRE • 09/29/2026
Out of bounds write in GPU in Google Chrome on on Android prior to 154.0.8037.57 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)
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Analysis
by VulDB Data Team • 09/29/2026
The vulnerability identified in Google Chrome for Android, specifically prior to version 154.0.8037.57, represents a critical out-of-bounds write flaw within the graphics processing unit subsystem. This type of memory corruption error occurs when software writes data beyond the boundaries of allocated memory buffers, potentially overwriting adjacent memory structures or executing arbitrary code if the attacker can control the content written to those locations. In this specific instance, the vulnerability resides in the GPU implementation used by Chrome on Android devices, which handles rendering operations for web pages and other graphical content processed through hardware acceleration features.
The operational context of this flaw is particularly concerning because it requires a compromised renderer process as a prerequisite for exploitation. Modern browsers like Chrome employ a multi-process architecture where each tab or site runs in an isolated sandboxed environment known as the renderer process. This design aims to contain potential exploits within that specific process, preventing them from accessing sensitive system resources or other browser data. However, this vulnerability allows an attacker who has already achieved code execution within one of these restricted renderer processes to break out of the sandbox boundary. By crafting a malicious HTML page that triggers the GPU memory corruption, the attacker can execute arbitrary code outside the protective confines of the sandbox, effectively escalating privileges and gaining broader access to the underlying operating system.
From a technical perspective, this vulnerability aligns with Common Weakness Enumeration categories such as CWE-787: Out-of-bounds Write, which describes writing data past the end or before the beginning of the intended buffer. The ability to escape the renderer sandbox places this flaw in direct conflict with fundamental browser security models designed to mitigate remote code execution attacks. In terms of adversary tactics and techniques, this scenario maps closely to MITRE ATT&CK technique T1059: Command and Scripting Interpreter, specifically when used for post-exploitation activities following an initial compromise via a malicious web page. The exploitation chain typically involves the attacker hosting or directing a victim to a crafted HTML file that contains specific JavaScript code designed to trigger the GPU driver bug during rendering operations.
The impact of this vulnerability is severe due to its potential for remote code execution without user interaction beyond visiting a webpage, assuming the browser has hardware acceleration enabled and configured in a way that utilizes the vulnerable GPU components. Once outside the sandbox, an attacker could potentially install malware, exfiltrate sensitive data stored by other applications on the device, or use the compromised Android system as part of a larger botnet. The critical severity rating assigned by Chromium reflects the high likelihood of successful exploitation and the significant consequences associated with breaking out of browser sandboxes on mobile platforms where users often store personal information and financial credentials.
Mitigation strategies primarily involve updating Google Chrome to version 154.0.8037.57 or later, which includes patches that correct the memory management logic within the GPU subsystem to prevent writes beyond allocated buffer boundaries. Users should ensure automatic updates are enabled for their browsers to receive security fixes promptly. Additionally, administrators and users can consider disabling hardware acceleration in Chrome settings as a temporary workaround if immediate patching is not possible, although this may degrade performance for graphics-intensive web applications. Security monitoring tools should be configured to detect unusual process behavior or privilege escalation attempts originating from browser processes on Android devices, providing an additional layer of defense against exploitation of such vulnerabilities.