CVE-2026-65093 in OpenShell
Summary
by MITRE • 08/25/2026
NVIDIA OpenShell for Linux contains a vulnerability where an attacker could cause a sandbox escape. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, data tampering, and information disclosure.
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Analysis
by VulDB Data Team • 08/25/2026
The identified vulnerability within NVIDIA OpenShell for Linux represents a critical security flaw that undermines the fundamental isolation mechanisms designed to protect host systems from untrusted or potentially malicious workloads. As an environment intended to facilitate secure shell access and command execution, particularly in containerized or virtualized contexts, OpenShell relies on robust sandboxing techniques to prevent processes running within it from interacting with resources outside their designated boundaries. The specific nature of this vulnerability allows an attacker who has gained initial foothold inside the OpenShell environment to bypass these containment controls. This escape capability is significant because it effectively neutralizes the security perimeter that separates the guest or containerized workload from the underlying host operating system, thereby exposing critical infrastructure components to direct exploitation.
From a technical perspective, this flaw likely stems from improper validation of inputs or insufficient enforcement of access control policies within the OpenShell architecture. When an attacker crafts specific commands or payloads that exploit these weaknesses, they can manipulate internal state variables or interface with kernel-level APIs in ways that were not anticipated by the developers. This manipulation enables the execution of arbitrary code on the host system rather than being confined to the sandboxed environment. The ability to escape the sandbox transforms a localized compromise into a systemic one, allowing the attacker to leverage their elevated position to interact directly with the Linux kernel and other running services.
The operational impact of this vulnerability is severe due to its potential for privilege escalation and lateral movement within an enterprise network. A successful exploit can lead to full code execution on the host machine, granting the attacker administrative-level access without requiring prior authentication or exploiting additional vulnerabilities in system binaries. This capability facilitates data tampering, where sensitive information stored on the host file systems can be altered, deleted, or exfiltrated. Furthermore, the vulnerability enables comprehensive information disclosure, as the attacker may access memory dumps, configuration files, and network traffic that were previously protected by the sandbox boundary. In environments such as cloud computing platforms or high-performance computing clusters using NVIDIA hardware, this could result in widespread compromise of multiple tenants or critical computational resources.
To mitigate these risks, immediate action is required to apply vendor-provided patches that address the underlying code defects responsible for the sandbox escape. Organizations should prioritize updating their OpenShell installations and verify that all associated dependencies are also current. In addition to patching, implementing strict network segmentation can limit the blast radius of a potential compromise by isolating systems running vulnerable versions from critical data stores and management networks. Security teams should also enforce least-privilege principles for user accounts interacting with OpenShell, ensuring that only authorized personnel have access to shell environments where such vulnerabilities might be present. Continuous monitoring using intrusion detection systems configured to detect anomalous process behavior or unexpected privilege changes can help identify exploitation attempts in real time.
This vulnerability aligns with CWE Category 284, which covers Improper Access Control, specifically relating to the failure to enforce proper boundaries between different security zones. It also maps closely to MITRE ATT&CK technique T1055, Process Injection, and potentially T1610, Dump from a Running Process, as escaping the sandbox often involves injecting code into privileged processes or accessing protected memory spaces. Understanding these mappings helps in aligning remediation efforts with broader industry frameworks for vulnerability management and threat intelligence integration. By addressing this issue promptly, organizations can restore the integrity of their security architecture and prevent attackers from leveraging OpenShell as a pivot point for deeper network infiltration.