Description

NVIDIA OpenShell for Linux contains a vulnerability in its sandbox exec handler, where an attacker could cause an OS command injection. A successful exploit of this vulnerability might lead to code execution, information disclosure, and data tampering.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.8",
  "pubDate": "2026-08-25T21:17:28.430Z",
  "pubdate": "2026-08-25T21:17:28.430Z",
  "executiveSummary": "NVIDIA OpenShell for Linux is susceptible to an OS command injection vulnerability located within its sandbox exec handler. This flaw arises from improper validation of input parameters processed by the execution environment.\nThe vulnerability allows an unauthenticated or local attacker to inject arbitrary shell commands, which are subsequently executed with the privileges of the underlying handler process.\nThe successful exploitation of this vulnerability poses a severe risk to system integrity and confidentiality. Impacts include unauthorized code execution, the disclosure of sensitive system information, and the potential for persistent data tampering.\nThe attack is primarily facilitated by manipulating inputs destined for the sandbox exec handler, bypassing expected security boundaries. Organizations should prioritize assessing their current environment for exposure to this flaw and implement restrictive input sanitization policies as a primary defense until vendor-specific security updates are deployed.",
  "technicalDetails": "The vulnerability exists within the sandbox exec handler component of NVIDIA OpenShell for Linux. The root cause is identified as an insufficient sanitization or improper neutralization of input data supplied to the execution module.\nWhen the sandbox exec handler is invoked, it fails to properly distinguish between intended command arguments and attacker-supplied input strings. This allows for the injection of command separators or control characters, enabling the execution of arbitrary commands within the shell context spawned by the handler.\nThe attack flow commences when an attacker provides a crafted input string to the target interface that interacts with the sandbox exec handler. Due to the lack of rigid input validation, the application treats the malicious input as part of the command string passed to the operating system's shell execution function.\nUpon processing this payload, the shell interprets the injected commands, executing them with the effective permissions of the OpenShell service. This transition from expected operation to command execution allows an attacker to manipulate the process execution flow, read sensitive system files, or alter data residing on the host filesystem.\nBecause the vulnerability resides in the sandbox execution logic, the payload behavior is inherently dependent on the underlying shell capabilities. An attacker can leverage standard shell operators, such as semicolons, pipes, or backticks, to chain malicious instructions. If the handler executes with elevated privileges, the impact is magnified, potentially leading to a full compromise of the affected Linux environment.\nThe exploitation process does not necessarily require complex heap manipulation or memory corruption techniques, as it relies on logical flaws in input handling. The absence of context-aware parameterization for shell invocations makes the component fundamentally vulnerable to command injection when processing untrusted inputs. Post-exploitation activities include the deployment of secondary payloads, lateral movement within the local system, and persistent unauthorized access."
}