CVE-2026-44093 in CHARX SEC-3150
Summary
by MITRE • 07/30/2026
A local privilege escalation vulnerability in the init-script for user-applications allows a low-privileged local user to execute arbitrary commands as root, resulting in full system compromise.
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Analysis
by VulDB Data Team • 07/30/2026
This vulnerability represents a critical local privilege escalation flaw that exploits weaknesses in the initialization script handling mechanism for user applications. The vulnerability stems from improper permission controls and inadequate input validation within the init-script processing framework, allowing unprivileged users to manipulate system initialization sequences. When user applications are launched through these vulnerable scripts, the system fails to properly validate or sanitize the execution context, creating a pathway for privilege elevation. The flaw typically manifests when the init-script executes with elevated privileges during application startup but does not adequately verify the identity or permissions of the calling process. This represents a classic example of insufficient privilege separation and inadequate access control enforcement. The vulnerability directly maps to CWE-276, which addresses improper privileges, and CWE-78, concerning OS command injection. From an operational perspective, this flaw enables attackers to execute arbitrary commands with root privileges, effectively providing complete system compromise. Once exploited, adversaries can establish persistent backdoors, modify critical system files, escalate further within the network, or extract sensitive data from the compromised system. The attack vector leverages the principle of least privilege violation and demonstrates how application initialization processes can become attack surfaces when not properly secured. This vulnerability aligns with ATT&CK technique T1068, which covers local privilege escalation through exploitation of misconfigurations, and T1543, covering persistence mechanisms via system scripts. The impact extends beyond immediate privilege elevation to include potential lateral movement opportunities and data exfiltration capabilities.
The technical implementation of this vulnerability typically involves manipulating environment variables, command-line arguments, or script execution paths that are processed during application initialization. Attackers can exploit the flaw by crafting specific inputs that cause the init-script to execute unintended commands with root privileges. The underlying issue often resides in shell command construction where user-supplied data is directly incorporated into system calls without proper sanitization or validation. This creates an environment where malicious input can be interpreted as executable commands rather than benign parameters, leading to arbitrary code execution at the highest privilege level. The vulnerability commonly appears in systems where application initialization scripts are not properly hardened against injection attacks or where insufficient input filtering prevents malicious payloads from being executed. Security controls such as proper access controls, input validation, and privilege separation mechanisms should prevent exploitation of this type of flaw. Organizations should implement strict verification processes for all system initialization components and ensure that scripts execute with minimal required privileges.
Mitigation strategies for this vulnerability focus on implementing comprehensive privilege separation and access control measures throughout the application initialization lifecycle. System administrators should immediately review and harden all init-scripts to ensure they properly validate inputs, sanitize environment variables, and enforce strict privilege boundaries during execution. The implementation of mandatory access controls through mechanisms like SELinux or AppArmor can provide additional protection layers that prevent unauthorized privilege escalation regardless of script vulnerabilities. Regular security audits of initialization processes and comprehensive input validation should be enforced across all system components. Patch management procedures must be prioritized to address known vulnerabilities in application frameworks and initialization systems. Additionally, implementing principle of least privilege enforcement ensures that applications only execute with necessary permissions, reducing the potential impact of exploitation. Network segmentation and monitoring solutions should detect anomalous execution patterns that may indicate exploitation attempts. The remediation approach should include comprehensive testing of all init-script behaviors under various user privileges to identify potential injection points or privilege escalation paths. Organizations must also establish robust incident response procedures specifically designed to address privilege escalation events, as these vulnerabilities often serve as initial access points for broader system compromises.