CVE-2026-106247 in Chrome
Summary
by MITRE • 10/06/2026
Buffer overflow in ANGLE in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 10/07/2026
The vulnerability identified as CVE-2024-11673 represents a critical boundary condition within the ANGLE graphics library, which serves as the translation layer between web applications and native GPU drivers in Google Chrome prior to version 155.0.8059.39. This specific flaw is classified under CWE-120, Buffer Copy without Checking Size of Input, commonly known as a buffer overflow. The technical nature of this defect involves the improper handling of memory allocation and data copying operations within the graphics processing pipeline. When ANGLE processes certain graphical commands or shader instructions derived from web content, it fails to adequately validate the size of input buffers against allocated memory limits. This oversight allows for an out-of-bounds write operation when specific conditions are met during rendering tasks.
The operational impact of this vulnerability is heavily dependent on the attacker's initial position within the browser architecture. As noted in the security severity assessment, exploitation requires that the renderer process has already been compromised by a remote attacker. In modern browsers like Chrome, each tab and plugin runs in an isolated sandboxed environment known as the renderer process. This isolation is designed to prevent malicious code executed on untrusted websites from accessing sensitive user data or system resources directly. However, if an attacker successfully exploits a separate vulnerability within the same renderer process to gain arbitrary code execution capabilities, they can then leverage this buffer overflow in ANGLE to escape that sandbox boundary. By manipulating memory structures through the crafted HTML page containing malicious graphics commands, the attacker can overwrite adjacent memory regions critical for security checks or control flow mechanisms, thereby achieving privilege escalation from a low-privilege renderer context to a higher-privileged state outside the sandbox.
From an offensive security perspective, this vulnerability aligns with ATT&CK technique T1059, Command and Scripting Interpreter, specifically when used in conjunction with process injection or dynamic binary editing techniques that follow initial access via web delivery. The attack vector involves delivering a crafted HTML page through standard web browsing activities, which falls under the Initial Access tactic of the MITRE ATT&CK framework. Once inside the renderer, the exploitation of this memory corruption flaw facilitates lateral movement within the local system by breaking out of the browser's security perimeter. This escape mechanism is particularly dangerous because it undermines one of the primary defenses against drive-by download attacks and malicious web content execution.
Mitigation strategies for this vulnerability primarily involve immediate software updates to ensure that all instances of Google Chrome are upgraded to version 155.0.8059.39 or later, where these memory management checks have been reinforced by Chromium developers. For organizations unable to patch immediately due to compatibility constraints, network-level controls such as web filtering proxies can be configured to block access to known malicious domains hosting exploit kits that target this specific flaw. Additionally, enabling strict Content Security Policies and disabling JavaScript execution on untrusted sites can reduce the attack surface available for initial compromise of the renderer process. It is also advisable to ensure that hardware acceleration features are monitored closely, as ANGLE relies heavily on GPU interaction, making graphics-intensive web applications potential vectors if not properly sandboxed or updated.