CVE-2026-113005 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in Bluetooth 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: Medium)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability described involves a critical memory corruption flaw within the Bluetooth subsystem of Google Chrome, specifically affecting versions prior to 156.0.8078.47. This defect represents a significant deviation from expected secure coding practices in handling data structures associated with Bluetooth Low Energy (BLE) or Classic Bluetooth protocols integrated into the browser environment. Memory corruption vulnerabilities are among the most dangerous classes of software defects because they can lead to arbitrary code execution, denial of service, and privilege escalation. In this specific instance, the flaw resides within the component responsible for processing Bluetooth-related data packets or state management during web-based interactions. The severity is classified as Medium by Chromium security standards, indicating that while exploitation requires certain conditions, the potential impact on system integrity remains substantial due to the sandboxed nature of modern browsers being bypassable through such low-level memory errors.
The technical mechanism underlying this vulnerability likely involves improper validation or bounds checking when processing crafted input related to Bluetooth services or characteristics exposed via WebBluetooth APIs. An attacker could construct a malicious HTML page that triggers specific JavaScript calls to interact with nearby Bluetooth devices or simulate BLE advertisements. When the browser processes these requests, it may allocate memory buffers without adequately verifying their size or content integrity. This oversight allows an attacker to write data beyond the allocated buffer boundaries, corrupting adjacent memory structures such as function pointers, object headers, or heap metadata. Such corruption can be leveraged to redirect program execution flow, effectively allowing a remote attacker to execute arbitrary code within the context of the browser process. Despite Chrome's robust sandboxing architecture designed to isolate web content from the host operating system, successful exploitation of this memory corruption flaw could potentially break out of these restrictions or cause severe instability leading to local privilege escalation if combined with other vulnerabilities.
From an operational perspective, the impact of this vulnerability is profound for users who rely on Bluetooth-enabled features within their browsing sessions. A remote attacker does not need physical access to the victim's machine but must entice them to visit a specially crafted webpage or be subjected to a drive-by download scenario where such content is served automatically. Once executed, the arbitrary code runs with the privileges of the browser process, which typically has limited permissions compared to the user account but still possesses significant capabilities including file system access within the sandboxed directory and network communication. This enables data exfiltration, installation of persistent malware, or use of the compromised machine as part of a botnet. The ability to execute code via a crafted HTML page highlights the risk associated with integrating complex hardware interfaces like Bluetooth into web applications, expanding the attack surface beyond traditional network vectors to include local wireless protocols that are often less scrutinized than TCP/IP stacks.
Mitigation strategies primarily involve immediate software updates to ensure all instances of Google Chrome are upgraded to version 156.0.8078.47 or later, where these memory management issues have been addressed through rigorous code review and patching. Organizations should enforce automated update policies across all endpoints to minimize the window of exposure. For users unable to update immediately, disabling Bluetooth functionality within the browser settings can serve as a temporary workaround, although this may impact legitimate use cases requiring wireless peripheral connectivity. Additionally, employing strict content security policies (CSP) and sandboxing configurations that limit script execution capabilities can reduce the likelihood of successful exploitation by restricting the actions malicious scripts can perform even if they manage to trigger the vulnerability. Security teams should also monitor for indicators of compromise related to unusual Bluetooth activity or unexpected network connections originating from browser processes, as these may signal active attempts to exploit this flaw in the wild.
This incident aligns with common weakness enumerations such as CWE-120 Buffer Copy without Checking Size of Input and CWE-787 Out-of-bounds Write, which are prevalent in systems programming where manual memory management is involved. It also maps to MITRE ATT&CK techniques involving initial access via drive-by compromise and execution through browser-based payloads. The integration of hardware interfaces into web browsers continues to present unique security challenges that require ongoing vigilance and adherence to secure development lifecycles. By understanding the technical nuances of such vulnerabilities, defenders can better anticipate attack vectors and implement more resilient defense-in-depth strategies that account for both network-level threats and local protocol-specific exploits.