CVE-2026-113340 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in ANGLE in Google Chrome on on Windows prior to 156.0.8078.47 allowed a remote attacker to potentially read memory inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 10/22/2026
The vulnerability identified within the ANGLE graphics library component of Google Chrome represents a critical class of software defects known as memory corruption issues, specifically occurring on Windows operating systems prior to version 156.0.8078.47. This flaw is categorized under CWE-122, which denotes heap-based buffer overflow, or potentially CWE-125 for out-of-bounds read depending on the specific internal mechanics of the memory access violation. The ANGLE project serves as a crucial translation layer that converts OpenGL ES API calls into native graphics APIs such as DirectX and Vulkan, allowing web content to render complex 3D graphics across different platforms without requiring hardware-specific drivers from the browser itself. When an attacker crafts a malicious HTML page containing specially constructed JavaScript or WebGL code, they can trigger this memory corruption flaw during the rendering process. The technical nature of the exploit involves manipulating data structures within the ANGLE library such that it writes beyond allocated buffer boundaries or reads from invalid memory addresses, leading to undefined behavior in the browser's execution environment.
The operational impact of this vulnerability is significant due to its potential for remote code execution and information disclosure through a sandbox escape mechanism. Although Chrome employs a robust multi-process architecture with strict sandboxing to isolate web content from the host operating system, memory corruption vulnerabilities within core components like ANGLE can sometimes be leveraged to bypass these security boundaries. By carefully crafting the exploit payload, an attacker may achieve arbitrary read access to memory regions that are normally protected by the browser's sandbox policy. This capability allows for the exfiltration of sensitive data such as cookies, session tokens, or other user-specific information stored in memory. Furthermore, depending on the specific exploitation technique and available mitigations like ASLR and DEP, this vulnerability could potentially be chained with other flaws to achieve arbitrary code execution within the browser process context, thereby compromising the integrity of the entire system if further escalation techniques are employed.
From a threat intelligence perspective, this type of vulnerability aligns with MITRE ATT&CK technique T1203, which covers Exploitation for Client Execution, as it relies on user interaction via a crafted web page to trigger the initial code execution or memory access. It also relates to T1059, Command and Scripting Interpreter, if JavaScript is used to facilitate the exploit chain. The severity rating of Medium by Chromium security reflects that while the vulnerability exists and can be exploited for information disclosure, it may require specific conditions or additional vulnerabilities in other components to achieve full remote code execution with high reliability. However, given the widespread use of Chrome and the critical nature of graphics processing in modern web applications, even medium-severity issues warrant immediate attention due to their potential impact on user privacy and system security.
Mitigation strategies primarily involve updating Google Chrome to version 156.0.8078.47 or later, where these memory corruption flaws have been addressed through code patches that enforce stricter bounds checking and improve the robustness of the ANGLE library's interaction with underlying graphics APIs. Organizations should ensure automated update policies are in place for all endpoints running Chrome to minimize exposure windows. Additionally, users can employ browser hardening techniques such as disabling JavaScript execution on untrusted sites or using extensions that restrict WebGL access unless explicitly permitted by the user. Security teams should also monitor for indicators of compromise related to unusual memory usage patterns or network connections originating from the chrome.exe process, which may indicate active exploitation attempts targeting this specific vulnerability class in older browser versions.