CVE-2026-113104 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in Frames in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 10/21/2026
The vulnerability described involves a critical memory corruption flaw located within the Frames component of Google Chrome, specifically affecting versions prior to 156.0.8078.47. This type of defect typically arises from improper handling of memory allocation or deallocation processes when rendering web content that utilizes iframe elements or similar frame structures. In modern browser architectures, frames are used to embed external documents within a webpage, and they operate under strict sandboxing rules designed to isolate potentially malicious code from the rest of the system. However, when a vulnerability exists in how these frames manage their internal memory states, an attacker can exploit race conditions, use-after-free errors, or buffer overflows to corrupt the browser's memory layout. The severity is classified as High by Chromium security standards because it directly impacts the core rendering engine and has the potential to bypass sandbox protections entirely.
From a technical perspective, memory corruption vulnerabilities in browsers are particularly dangerous because they provide the attacker with arbitrary read and write capabilities within the process space of the renderer. By crafting a malicious HTML page that triggers this specific flaw during frame initialization or manipulation, an adversary can overwrite critical data structures such as function pointers, object headers, or heap metadata. This corruption allows for control over the program counter or execution flow, which is the fundamental mechanism required to achieve arbitrary code execution. The attacker does not need local access or user interaction beyond visiting a webpage; the exploit relies on social engineering or drive-by download tactics where simply loading the crafted page initiates the exploitation chain.
The operational impact of this vulnerability extends far beyond simple data leakage. Successful exploitation allows a remote attacker to execute arbitrary code inside the sandboxed renderer process. While modern browsers employ multiple layers of defense such as site isolation, job objects on Windows, and seccomp-bpf filters on Linux, breaking out of the renderer sandbox is often the primary goal for advanced persistent threats or state-sponsored actors. Once an attacker gains execution privileges within the browser's context, they can attempt further privilege escalation to escape the sandbox entirely, potentially gaining control over the underlying operating system. This could lead to full compromise of the victim's machine, including theft of sensitive credentials, installation of malware, and lateral movement within a corporate network if the compromised device is part of an enterprise environment.
This vulnerability aligns with Common Weakness Enumeration (CWE) categories such as CWE-120 Buffer Copy without Checking Size of Input or CWE-416 Use After Free, depending on the specific nature of the memory corruption observed in forensic analysis. In terms of attack tactics, it maps to MITRE ATT&CK techniques including T1203 Exploitation for Client Execution and potentially T1059 Command and Scripting Interpreter if post-exploitation scripts are deployed. The exploitation vector is classified as Network-based with High complexity due to the need for a crafted HTML payload, but it carries a high impact score because of its ability to bypass security boundaries.
Mitigation strategies primarily involve immediate patching by upgrading Google Chrome to version 156.0.8078.47 or later where these memory management issues in the Frames component have been addressed through code hardening and improved bounds checking. For organizations unable to update immediately, 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 vulnerability. Additionally, enabling strict Content Security Policy (CSP) headers on internal websites can reduce the attack surface by limiting the sources from which scripts and frames are loaded. Users should also ensure that automatic updates for their browsers remain enabled to receive security patches promptly as they become available.