CVE-2026-112994 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in Browser 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: Low)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability described involves a memory corruption flaw within the browser engine of Google Chrome, specifically in versions prior to 156.0.8078.47. This type of defect typically arises from improper handling of memory allocation or deallocation processes during the parsing and rendering of web content. When an attacker crafts a malicious HTML page designed to exploit this specific flaw, they can trigger conditions that lead to unauthorized access to memory regions outside the intended boundaries. The severity is classified as low by Chromium security standards, which often indicates that while the vulnerability exists, it may require specific conditions or limited attack vectors to be successfully exploited in a real-world scenario. However, even low-severity vulnerabilities in browser engines are significant because browsers process untrusted content from the internet daily, making them high-value targets for attackers seeking initial access to user systems.
The technical mechanism behind this memory corruption likely involves issues such as use-after-free errors, buffer overflows, or type confusion within the JavaScript engine or rendering components of Chrome. These flaws allow a remote attacker to manipulate how data is stored and accessed in system memory. By constructing a specially crafted HTML page containing malicious scripts or malformed objects, an attacker can cause the browser to write data to incorrect memory locations or read from freed memory blocks. This manipulation disrupts the normal flow of execution and can lead to arbitrary code execution if the attacker successfully controls the content written to these corrupted memory regions. The ability to execute arbitrary code is particularly dangerous as it grants the attacker control over the processes running within the browser sandbox, potentially allowing them to bypass security restrictions imposed by the sandboxing architecture designed to isolate web content from the host operating system.
The operational impact of this vulnerability centers on the potential for remote code execution (RCE) inside the Chrome sandbox. Although modern browsers employ robust sandboxing techniques that restrict what processes can do after compromise, such as limiting file system access or network capabilities, any breach of these boundaries is a serious security incident. An attacker who successfully exploits this flaw could potentially escalate privileges by chaining this vulnerability with other local privilege escalation vulnerabilities to escape the sandbox entirely and gain control over the underlying operating system. This would allow them to install malware, steal sensitive data such as cookies and passwords stored in browser profiles, or use the compromised machine as a pivot point for further attacks within a network environment. The risk is amplified because users often visit untrusted websites unknowingly, making drive-by exploitation scenarios plausible if malicious content can be delivered through ads, redirects, or phishing links.
Mitigation strategies primarily involve updating to the latest version of Google Chrome where this issue has been patched by addressing the underlying memory management errors in the browser engine. Users and organizations should ensure that automatic updates are enabled for all browsers to minimize exposure windows. Additionally, security teams can implement defense-in-depth measures such as enabling site isolation features which further restrict how different websites interact with each other and system resources. Network-level controls like web application firewalls or content filtering solutions may also help block access to known malicious domains hosting exploit kits that target this specific vulnerability. Regular auditing of browser configurations and monitoring for unusual process behavior can provide early detection indicators if an exploitation attempt occurs despite patching delays.
From a classification perspective, this vulnerability aligns with CWE-120 Buffer Copy without Checking Size of Input or CWE-416 Use After Free depending on the exact nature of the memory corruption identified in the Chromium codebase. In terms of attack tactics, it maps to MITRE ATT&CK technique T1203 Exploitation for Client Execution, where attackers leverage software vulnerabilities to execute malicious payloads directly on client systems without user interaction beyond visiting a webpage. Understanding these mappings helps security professionals prioritize remediation efforts and align defensive postures with established industry frameworks that define common weaknesses and adversary behaviors in cyber operations.