CVE-2026-0805 in Crafty Controller
Summary
by MITRE • 01/30/2026
An input neutralization vulnerability in the Backup Configuration component of Crafty Controller allows a remote, authenticated attacker to perform file tampering and remote code execution via path traversal.
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Analysis
by VulDB Data Team • 02/27/2026
The vulnerability identified as CVE-2026-0805 resides within the Backup Configuration component of the Crafty Controller software, presenting a critical security risk that can be exploited by remote attackers who have already established authentication credentials. This input neutralization flaw specifically enables malicious actors to manipulate file paths through crafted inputs, creating opportunities for unauthorized file system access and potential code execution. The vulnerability stems from inadequate validation and sanitization of user-supplied input data within the backup configuration functionality, allowing attackers to manipulate the intended file paths during backup operations.
The technical implementation of this vulnerability involves path traversal mechanisms that fail to properly validate or sanitize file path inputs, enabling attackers to navigate beyond the intended directory boundaries. When an authenticated user interacts with the backup configuration component, malicious input can cause the system to process files outside of the designated backup directories, potentially allowing access to sensitive system files or the ability to overwrite critical components. This flaw operates at the intersection of CWE-22 Path Traversal and CWE-74 Improper Neutralization of Special Elements, creating a dangerous combination where both input validation failures and path manipulation techniques can be leveraged simultaneously. The vulnerability is particularly concerning because it requires only authentication credentials, meaning that an attacker who has already compromised legitimate user access can exploit this weakness without additional privileges.
Operationally, the impact of this vulnerability extends beyond simple file tampering to encompass full remote code execution capabilities, making it a severe threat to system integrity and confidentiality. Attackers can leverage this vulnerability to modify backup files, inject malicious code into system components, or potentially gain persistent access to the affected system. The remote nature of the attack means that exploitation can occur from any location where network access to the Crafty Controller is available, while the authenticated requirement limits the attack surface to legitimate users who have already established credentials within the system. This makes the vulnerability particularly dangerous in environments where user access controls may not be adequately enforced or where credential compromise occurs through other attack vectors.
Mitigation strategies for CVE-2026-0805 should focus on implementing robust input validation and sanitization mechanisms within the backup configuration component, including strict path validation that prevents traversal beyond designated directories. Organizations should enforce principle of least privilege access controls and implement proper file system permissions to limit the impact of potential exploitation. The implementation of secure coding practices that prevent path traversal vulnerabilities, including the use of absolute path validation and proper input sanitization, should be prioritized. Additionally, network segmentation and monitoring should be implemented to detect unusual backup activity or unauthorized access attempts to the controller system. Security controls should align with ATT&CK technique T1059 Command and Scripting Interpreter and T1566 Phishing, as attackers may leverage this vulnerability to establish persistent access or deliver additional payloads through compromised backup configurations. Regular security assessments and penetration testing should be conducted to verify that input validation mechanisms are properly implemented and functioning as intended.