CVE-2026-22902 in QuNetSwitch
Summary
by MITRE • 03/20/2026
A command injection vulnerability has been reported to affect QuNetSwitch. If a local attacker gains an administrator account, they can then exploit the vulnerability to execute arbitrary commands.
We have already fixed the vulnerability in the following version: QuNetSwitch 2.0.5.0906 and later
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Analysis
by VulDB Data Team • 03/26/2026
This vulnerability represents a critical command injection flaw in QuNetSwitch software that poses significant security risks to network infrastructure environments. The vulnerability stems from insufficient input validation and sanitization within the application's command processing mechanisms, allowing malicious actors with administrative privileges to inject and execute arbitrary system commands. Such a flaw fundamentally compromises the integrity and confidentiality of network operations by enabling unauthorized execution of potentially destructive commands. The vulnerability's impact is particularly severe because it requires only local administrative access to exploit, meaning that attackers who have already compromised administrative accounts can leverage this weakness to escalate their privileges or execute malicious operations.
The technical implementation of this command injection vulnerability aligns with common security flaws categorized under CWE-77 and CWE-88, which specifically address command injection vulnerabilities in software applications. These weaknesses occur when user-supplied data is directly incorporated into system commands without proper sanitization or escaping mechanisms. The vulnerability typically manifests when the application fails to properly validate or escape special characters that have meaning in command shells, allowing attackers to manipulate command execution flow. Attackers can leverage this flaw to execute system commands such as file manipulation, network reconnaissance, or even system compromise operations. The exploitation process involves crafting malicious inputs that bypass existing validation checks and inject command sequences that are then executed with the privileges of the administrative account.
From an operational perspective, the implications of this vulnerability extend beyond simple command execution to encompass broader network security compromise. The presence of administrative accounts in the system creates a high-value target for attackers who can leverage this vulnerability to establish persistent access, exfiltrate sensitive data, or disrupt network operations. The vulnerability's impact on network infrastructure security is particularly concerning because it can enable attackers to manipulate network configurations, redirect traffic, or disable security controls. This type of vulnerability directly affects the CIA triad by compromising confidentiality through potential data exfiltration, integrity through unauthorized modifications, and availability through potential service disruption.
The remediation for this vulnerability requires immediate deployment of QuNetSwitch version 2.0.5.0906 or later, which incorporates proper input validation and sanitization mechanisms to prevent command injection attacks. Organizations should conduct thorough vulnerability assessments to identify systems running affected versions and implement comprehensive patch management procedures. Security teams should also review administrative access controls and implement principle of least privilege concepts to limit the potential impact of compromised administrative accounts. The fix likely includes input filtering, command escaping mechanisms, and proper validation of user-supplied data before it is processed in system command contexts. This vulnerability serves as a reminder of the critical importance of input validation in security-sensitive applications and the need for continuous security testing and code review processes. Organizations should also consider implementing network segmentation, intrusion detection systems, and regular security audits to detect and prevent exploitation attempts. The vulnerability's classification under ATT&CK technique T1059.001 for command and scripting interpreter demonstrates the need for comprehensive defensive strategies that address multiple attack vectors and execution methods.