CVE-2026-113252 in Chrome
Summary
by MITRE • 10/21/2026
Improper input validation in ANGLE in Google Chrome on on Windows prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside 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 component of Google Chrome represents a critical failure in input validation mechanisms that governs how graphical data is processed prior to execution. ANGLE serves as a translation layer between web applications and native GPU APIs, converting OpenGL ES commands into DirectX or Vulkan instructions depending on the underlying hardware. When this component operates with improper input validation, it fails to adequately sanitize or verify the integrity of specific parameters passed from JavaScript-based rendering contexts to the low-level graphics driver interface. This deficiency allows a remote attacker who controls a malicious HTML page containing crafted WebGL content to inject malformed data structures that bypass standard boundary checks. The severity is classified as high because the flaw directly impacts the core security model of the browser, specifically targeting the isolation boundaries between web content and system resources.
The technical nature of this flaw centers on the lack of rigorous type checking or range validation for specific shader inputs or buffer allocations within the ANGLE translation layer. By crafting an HTML page that triggers a specific sequence of WebGL API calls, an attacker can cause the browser to interpret maliciously constructed data as valid executable instructions or memory addresses. This misinterpretation leads to out-of-bounds writes or arbitrary code execution primitives being passed directly to the graphics driver without sufficient sandboxing constraints. The attack vector is remote and requires user interaction in the form of visiting a compromised website, but once triggered, it exploits the trust relationship between the browser's rendering engine and the underlying operating system components responsible for hardware acceleration.
The operational impact of this vulnerability extends beyond simple data corruption or denial of service. Because ANGLE operates with elevated privileges relative to standard web content due to its direct interaction with GPU drivers, successful exploitation allows an attacker to execute arbitrary code outside the Chrome sandbox environment. This escape from the sandbox is particularly dangerous as it grants the attacker access to system-level resources that are normally protected by browser security policies. An adversary could leverage this capability to install malware, exfiltrate sensitive data stored on the local machine, or pivot further into a networked environment. The ability to execute code outside the sandbox effectively neutralizes one of the primary defense-in-depth strategies employed by modern web browsers, leaving the host system vulnerable to full compromise if no additional endpoint protection measures are in place.
Mitigation for this vulnerability primarily involves ensuring that all instances of Google Chrome on Windows systems are updated to version 156.0.8078.47 or later, where these input validation checks have been hardened and corrected by the Chromium security team. Organizations should enforce automated patch management policies to minimize the window of exposure for end-user devices. Additionally, administrators can implement application control policies that restrict the execution of untrusted scripts within browser contexts, although this is often impractical due to compatibility requirements with legitimate web applications. Users are advised to exercise caution when visiting unfamiliar websites and to ensure their browsers have hardware acceleration enabled only if necessary, as disabling WebGL or ANGLE features can reduce the attack surface for such graphics-based exploits.
From a classification perspective, this vulnerability aligns with CWE-20 Improper Input Validation, which describes cases where software receives data that is not properly validated before processing. The exploitation technique also maps to MITRE ATT&CK techniques related to sandbox escape and arbitrary code execution, specifically leveraging the browser's rendering engine as an initial access vector. Understanding these mappings helps security teams prioritize remediation efforts based on industry-standard risk frameworks. Continuous monitoring for anomalous behavior in graphics driver processes can provide early detection indicators for similar exploitation attempts, although patching remains the most effective defense against this specific class of input validation flaws in web browsers.