CVE-2025-2494 in Softdial Contact Center
Summary
by MITRE • 03/18/2025
Unrestricted file upload to Softdial Contact Center of Sytel Ltd. This vulnerability could allow an attacker to upload files to the server via the ‘/softdial/phpconsole/upload.php’ endpoint, which is protected by basic HTTP authentication. The files are uploaded to a directory exposed by the web application, which could result in code execution, giving the attacker full control over the server.
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Analysis
by VulDB Data Team • 10/22/2025
The vulnerability identified as CVE-2025-2494 represents a critical security flaw in Softdial Contact Center software developed by Sytel Ltd. This issue manifests as an unrestricted file upload capability that directly compromises the integrity and security posture of the affected system. The vulnerability exists within the web application's file handling mechanism, specifically at the '/softdial/phpconsole/upload.php' endpoint which serves as the primary attack vector for malicious file infiltration. The software's design fails to implement proper validation and sanitization measures for uploaded content, creating an exploitable condition that can be leveraged by threat actors to gain unauthorized access and control over the underlying server infrastructure.
The technical implementation of this vulnerability stems from inadequate input validation and access control mechanisms within the application's upload functionality. While the endpoint does employ basic HTTP authentication as a preliminary security measure, this protection is insufficient to prevent exploitation since the authentication mechanism itself can be bypassed or circumvented through various attack vectors. The upload.php script lacks proper file type validation, size restrictions, and content inspection capabilities that would normally prevent execution of malicious code. Files uploaded through this endpoint are stored in directories that are directly accessible via the web application, eliminating any protective barriers that might otherwise prevent direct code execution. This architectural flaw creates a direct path from file upload to code execution, effectively granting attackers the ability to deploy malicious payloads such as web shells, backdoors, or other harmful executables that can compromise the entire server environment.
The operational impact of CVE-2025-2494 extends far beyond simple data compromise, as it provides attackers with complete system control and persistence capabilities. Once an attacker successfully exploits this vulnerability, they gain the ability to execute arbitrary code on the target server, potentially leading to complete system takeover. This level of access allows threat actors to establish persistent backdoors, exfiltrate sensitive data, modify system configurations, and deploy additional malicious tools or malware. The vulnerability can be exploited to create a foothold for broader network infiltration, as compromised servers often serve as launching points for lateral movement within organizational networks. Additionally, the presence of unrestricted file upload capabilities increases the risk of denial of service attacks, data corruption, and unauthorized modification of critical system components. The impact is particularly severe given that this vulnerability affects a contact center application that typically processes sensitive customer information, making it a prime target for both financial gain and data theft operations.
Organizations utilizing Softdial Contact Center software must implement immediate remediation measures to address this vulnerability. The primary mitigation strategy involves implementing strict file validation and sanitization protocols that prevent execution of potentially malicious file types through the upload endpoint. This includes implementing comprehensive file type checking, content inspection, and proper file extension validation mechanisms that reject suspicious or unauthorized file formats. The basic HTTP authentication should be strengthened or replaced with more robust multi-factor authentication mechanisms to prevent credential-based attacks. Additionally, uploaded files should be stored in non-web-accessible directories and should be scanned for malicious content before being made available to the system. Network segmentation and access control measures should be implemented to limit the potential impact of successful exploitation. The application should be configured to disable unnecessary file upload functionality where possible, and all file upload operations should be logged and monitored for suspicious activity. Organizations should also consider implementing web application firewalls and intrusion detection systems to monitor for exploitation attempts and provide additional layers of defense against this type of vulnerability. This vulnerability aligns with CWE-434 which specifically addresses "Unrestricted Upload of File with Dangerous Type" and represents a clear violation of secure coding practices outlined in various security frameworks including those referenced in the ATT&CK framework under techniques related to initial access and execution.