CVE-2026-107091 in Inspiroy Frego S (L310) Windows Driver
Summary
by MITRE • 10/26/2026
An issue in HUION Inspiroy Frego S (L310) Windows Driver 20.0.1.118 allows a local attacker to execute arbitrary code via the HUION driver installer DLL-loading logic
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Analysis
by VulDB Data Team • 10/26/2026
The vulnerability identified in the HUION Inspiroy Frego S L310 Windows Driver version 20.0.1.118 represents a critical security flaw rooted in improper handling of dynamic link library loading mechanisms within the driver installation and execution process. This specific weakness allows for arbitrary code execution by an attacker who has achieved local access to the affected system. The core technical issue lies in how the installer or associated components resolve paths for DLLs, potentially relying on insecure search orders or failing to validate the integrity of loaded libraries before execution. In many Windows driver installations, particularly those involving hardware peripherals like graphics tablets, the installation scripts may load helper utilities or configuration modules from directories that are writable by standard users or lack strict path verification. This creates a scenario where an attacker can place a malicious DLL in one of these search paths, causing the legitimate but vulnerable installer logic to load and execute the untrusted code with elevated privileges associated with the driver installation process.
From a technical perspective, this vulnerability aligns closely with CWE-427, which describes Uncontrolled Search Path for Dangerous Library. When an application constructs file paths dynamically without fully qualifying them or verifying their origin against a known good list of directories, it becomes susceptible to DLL hijacking attacks. In the context of driver installations, these processes often run with high privileges, such as SYSTEM level access, to interact directly with hardware devices and kernel-mode drivers. Consequently, if an attacker can trick the installer into loading a maliciously crafted DLL from a user-writable directory like Temp or ProgramData, that code will execute within the privileged context of the installation service. This bypasses standard user-level security boundaries, allowing the attacker to gain full control over the operating system without needing additional privilege escalation exploits.
The operational impact of this vulnerability is severe due to the high-privilege nature of driver installations. A successful exploitation could result in complete compromise of the host machine, including theft of sensitive data, installation of persistent backdoors, or use of the compromised device as a pivot point for further network attacks. Since HUION devices are often used by professionals in creative fields who may prioritize functionality and ease of setup over rigorous security configurations, users might be less vigilant about verifying installer sources or monitoring system changes during driver updates. The vulnerability specifically targets local attackers, meaning that physical access to the machine or a compromised user account with write permissions to relevant directories is required for exploitation. However, given the prevalence of malware that seeks to escalate privileges via legitimate software vulnerabilities, this flaw provides an attractive vector for automated attacks if combined with social engineering tactics designed to trick users into running modified installers or leaving malicious files in predictable locations.
Mitigation strategies should focus on both immediate remediation and long-term security hardening. The primary defense is to update the HUION Inspiroy Frego S driver to a version that addresses this DLL loading flaw, ensuring that path resolution follows secure practices such as using fully qualified paths or implementing strict validation checks before loading external libraries. Users should ensure they download drivers exclusively from official sources and verify digital signatures where available. From an enterprise security standpoint, deploying application control policies can prevent unauthorized executables and DLLs from running in critical directories associated with driver installations. Additionally, restricting write permissions to system-wide temporary folders and installation paths for standard users significantly reduces the attack surface by preventing attackers from placing malicious payloads that could be hijacked during legitimate software operations. Security monitoring tools should also be configured to alert on unusual process creation events originating from known installer processes or DLL load attempts in sensitive directories, providing an additional layer of detection against exploitation attempts. This vulnerability underscores the importance of secure coding practices even for peripheral hardware drivers, which are often overlooked in broader cybersecurity assessments despite their potential to provide deep system access.