CVE-2026-113192 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in V8 in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside 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 involves a critical memory corruption flaw within the V8 JavaScript engine, which serves as the core runtime for Google Chrome and other Chromium-based browsers prior to version 156.0.8078.47. This specific defect allows an attacker who can trick a user into visiting a maliciously crafted HTML page to execute arbitrary code within the browser's sandboxed environment. The severity of this issue is classified as High by the Chromium security team, indicating that it poses a significant risk to system integrity and confidentiality due to its potential for remote code execution without requiring any form of authentication or physical access from the attacker.
At a technical level, memory corruption vulnerabilities in V8 typically arise from improper handling of data structures during JavaScript object manipulation, array operations, or type coercion processes. When the engine fails to properly validate bounds or manage heap allocations, it can lead to conditions such as use-after-free, buffer overflow, or integer overflows. In this specific instance, the crafted HTML page likely exploits a logic error in how V8 manages memory for certain JavaScript objects or arrays. By triggering these malformed states, an attacker gains control over critical pointers or memory regions within the browser process. This exploitation path is particularly dangerous because it bypasses standard input validation mechanisms that are designed to prevent such low-level memory abuses from occurring during normal script execution.
The operational impact of this vulnerability extends beyond simple data leakage. Because modern browsers employ sandboxing techniques to isolate web content from the underlying operating system, successful exploitation does not immediately grant full control over the victim's machine. Instead, it allows for arbitrary code execution within the restricted context of the browser process itself. From here, an attacker can leverage additional exploits or privilege escalation techniques to break out of the sandbox and achieve arbitrary code execution on the host system with the privileges of the current user. This chain of exploitation enables a wide range of malicious activities, including the installation of persistent malware, theft of sensitive credentials stored in the browser, keylogging, and surveillance of user activity through webcam or microphone access if permissions were previously granted.
This vulnerability aligns closely with Common Weakness Enumeration (CWE) categories such as CWE-120 Buffer Copy without Checking Size of Input and CWE-416 Use After Free, which are prevalent in complex software engines like V8 where manual memory management interactions occur implicitly through the JavaScript runtime. Furthermore, from a tactical perspective related to the MITRE ATT&CK framework, this exploit facilitates initial access via spearphishing or drive-by download techniques (T1566) and enables execution of native payloads within a sandboxed environment (T1059), potentially leading to defense evasion through process hollowing or injection if further exploitation steps are employed.
To mitigate the risks associated with this vulnerability, users must ensure that Google Chrome is updated to version 156.0.8078.47 or later as soon as possible. Automatic updates should be enabled to receive security patches promptly when they become available. For enterprise environments, IT administrators should verify patch compliance across all endpoints and consider implementing application whitelisting or strict content security policies to limit the execution of untrusted scripts from unknown origins. Additionally, users are advised to exercise caution with links received via email or instant messaging that direct them to unfamiliar websites, as these remain a primary vector for delivering such crafted HTML pages designed to trigger memory corruption flaws in outdated browser versions.