CVE-2026-79834 in NonStop SQL
Summary
by MITRE • 10/15/2026
A security vulnerability in HPE NonStop SQL/MX SQLCAT may allow an unauthenticated user to perform unauthorized command execution.
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Analysis
by VulDB Data Team • 10/15/2026
The identified vulnerability resides within the SQLCAT component of Hewlett Packard Enterprise's NonStop SQL/MX database management system, presenting a critical risk for organizations relying on this platform for high-availability transaction processing and data warehousing operations. This specific flaw allows an unauthenticated actor to execute arbitrary commands with elevated privileges, effectively bypassing standard authentication mechanisms that are typically required to interact with the database engine. The presence of such a vulnerability in SQLCAT is particularly concerning because it targets a core utility often used for system monitoring and diagnostic purposes, which may be exposed through network interfaces or administrative access points without sufficient input validation or privilege separation controls.
From a technical perspective, this flaw represents a classic case of improper authentication leading to remote code execution. The attacker does not need valid credentials to initiate the exploit sequence, indicating that the vulnerability likely stems from insufficient checks on incoming requests before they are processed by the underlying operating system shell or command interpreter. This lack of validation allows malicious payloads to be injected into commands executed by SQLCAT, resulting in arbitrary code execution within the context of the service account running the process. Such a scenario aligns with CWE-287, which describes Improper Authentication, and often overlaps with CWE-94, Code Injection vulnerabilities where user-supplied input is not properly sanitized before being passed to system-level functions.
The operational impact of this vulnerability is severe, as it grants an unauthenticated attacker full control over the affected NonStop SQL/MX instance. Once command execution is achieved, the adversary can manipulate database files, exfiltrate sensitive data, install persistent backdoors, or pivot further into the internal network infrastructure. In enterprise environments where HPE NonStop systems are often deployed for mission-critical applications such as financial transactions and healthcare records, this level of compromise can lead to significant business disruption, regulatory non-compliance, and substantial reputational damage. The ability to execute commands without authentication also facilitates lateral movement, allowing the attacker to explore other connected systems using credentials or tokens found on the compromised host.
In terms of threat modeling, this vulnerability maps directly to MITRE ATT&CK technique T1059, Command and Scripting Interpreter, specifically under sub-techniques that involve system-level commands like cmd.exe or sh depending on the underlying operating environment. The initial access vector is categorized under T1133, External Remote Services, assuming SQLCAT is accessible over a network. Defense strategies must prioritize immediate remediation through vendor-provided patches if available, as this represents an active exploitation risk in many environments. Organizations should also implement strict network segmentation to limit exposure of NonStop systems to only authorized management networks and enforce robust access control lists that restrict connectivity to essential ports and protocols. Additionally, deploying intrusion detection signatures capable of identifying command injection patterns within SQLCAT traffic can provide a layer of defense-in-depth while patching efforts are underway.