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A heap buffer overflow vulnerability has been identified in the GPU component of Google Chrome on Android, tracked as CVE-2026-11672. This flaw resides in the GPU processing subsystem, where improper memory management and insufficient bounds checking during the handling of complex graphics operations or specific JavaScript calls allow for arbitrary memory corruption. When a user visits a specially crafted HTML page, the attacker, who must have already compromised the renderer process as a prerequisite, can overflow a memory buffer on the heap. By overwriting adjacent memory regions, such as function pointers or C++ virtual tables, the attacker can hijack the execution flow. This initial compromise of the renderer is achieved through a separate remote execution vector, making the exploitation chain a two-step process. However, once inside the renderer’s sandboxed environment, this vulnerability provides a pathway to escape that sandbox. The successful exploitation of this out-of-bounds write condition (CWE-787) undermines Chrome’s fundamental security isolation mechanisms, granting the attacker the ability to execute arbitrary code with the privileges of the browser process outside the confined sandbox. Consequently, an attacker could gain access to system resources, user data, and perform further malicious actions on the device. Affected are all versions prior to 149.0.7827.103. Due to its potential to bypass Chrome’s security model, this vulnerability is classified as a high-severity issue by Chromium.
DailyCVE Form:
Platform: Google Chrome on Android
Version: prior to 149.0.7827.103
Vulnerability: Heap buffer overflow (CWE-787)
Severity: High
date: June 8, 2026
Prediction: June 9–10, 2026
What Undercode Say:
Upon analyzing the vulnerability, Undercode recommends the following actions and observations:
Check the current Chrome version on Android Navigate to chrome://version/ in the address bar Alternatively, use ADB (Android Debug Bridge) to check the version adb shell dumpsys package com.android.chrome | grep versionName To mitigate the risk without updating, disable GPU acceleration (Note: may impact performance) Launch Chrome with the '--disable-gpu' flag am start -n com.android.chrome/com.google.android.apps.chrome.Main --es args "--disable-gpu"
How Exploit:
The exploit chain for CVE-2026-11672 typically involves the following steps:
1. The attacker first compromises the renderer process by exploiting a separate vulnerability (e.g., CVE-2026-11645 in the JavaScript engine).
2. Once control of the renderer is achieved, the attacker sends a crafted HTML page to the victim.
3. The page contains malicious code that triggers the heap buffer overflow within the GPU component.
4. By carefully controlling the data written out-of-bounds, the attacker corrupts adjacent heap objects, such as function pointers.
5. This corruption hijacks the program’s control flow, allowing the attacker’s code to execute within the privileged browser process.
6. The execution of arbitrary code outside the sandbox leads to a full system compromise.
Protection:
To protect against CVE-2026-11672, users should immediately update their Google Chrome browser on Android to version 149.0.7827.103 or later. As a temporary workaround, users can disable GPU acceleration in Chrome settings or launch the browser with the `–disable-gpu` flag to reduce the attack surface. Applying the latest Android system security updates is also highly recommended.
Impact:
Successful exploitation of this vulnerability allows a remote attacker to escape the browser’s sandbox, leading to the execution of arbitrary code with elevated privileges. This can result in a full compromise of the Android device, including unauthorized access to sensitive user data, system resources, and the ability to install malware or spyware without the user’s knowledge. The vulnerability undermines the core security isolation mechanism of the browser, effectively turning a renderer compromise into a complete device takeover.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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