CVE-2026-4130 in SystemLink
Summary
by MITRE • 09/10/2026
There is a storage of sensitive information in cleartext vulnerability in NI SystemLink. This vulnerability may allow an attacker with local access to obtain sensitive information stored by the system in the clear. This vulnerability affects NI SystemLink and NI SystemLink Server 2026 Q3 and prior versions.
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Analysis
by VulDB Data Team • 09/10/2026
The identified vulnerability represents a critical failure in data protection mechanisms within National Instruments' SystemLink ecosystem, specifically affecting versions up to and including the 2026 Q3 release of both NI SystemLink and NI SystemLink Server. This flaw is categorized as an improper storage of sensitive information where credentials or other confidential artifacts are persisted on disk without adequate encryption or obfuscation. In a secure architecture, any data deemed sensitive must be protected using strong cryptographic standards such as AES-256 for symmetric encryption or RSA with appropriate key lengths for asymmetric operations, ensuring that even if the underlying file system is compromised, the contents remain unintelligible to unauthorized parties. The absence of these controls indicates a fundamental oversight in the application's security design phase, where data confidentiality was not prioritized during the implementation of storage routines.
From an operational perspective, this vulnerability significantly lowers the barrier for exploitation by attackers who have already achieved local access on the affected host system. Local privilege escalation or simple file traversal attacks can lead to the direct extraction of plaintext credentials, API keys, session tokens, or other high-value secrets stored within the application's configuration files or database dumps. The impact is severe because these extracted artifacts often serve as master keys for further lateral movement across the network. An attacker possessing these cleartext values can authenticate to remote services, bypass access controls, and potentially gain administrative privileges over connected devices or cloud resources managed by SystemLink. This transforms a low-impact local issue into a high-severity compromise of system integrity and confidentiality.
The technical nature of this flaw aligns directly with CWE-312, which defines the improper storage of sensitive information as storing critical data in an insecure manner that allows unauthorized access. Furthermore, from the perspective of adversary tactics, this vulnerability facilitates several techniques outlined in the MITRE ATT&CK framework. It supports Credential Access through methods such as Unsecured Credentials or OS Credential Dumping, allowing attackers to harvest login credentials directly from local storage. Additionally, it aids in Discovery and Lateral Movement by providing the necessary authentication material to probe other systems within the enterprise environment without triggering additional security alerts associated with brute-force attacks or password spraying.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. The primary corrective action is for organizations running affected versions of NI SystemLink and NI SystemLink Server 2026 Q3 and prior to apply vendor-provided patches that enforce encryption standards for all sensitive data at rest. Until patching is feasible, administrators should implement strict file system permissions using operating-level access control lists to restrict read/write/execute rights on the directories containing these configuration files or databases to only the service account running the application and trusted administrative users with verified need-to-know justification. Additionally, implementing host-based intrusion detection systems can help monitor for unauthorized reads of sensitive configuration paths, providing an additional layer of defense-in-depth against local exploitation attempts.