CVE-2026-35148 in DFXServer
Summary
by MITRE • 07/16/2026
HCL DFXServer is affected by a Missing Access Control vulnerability. This vulnerability states that certain endpoints are accessible without any form of authentication in another browser. This allows any network user to invoke these APIs and interact with the application without verification of their identity or authorization level.
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Analysis
by VulDB Data Team • 07/16/2026
The HCL DFXServer vulnerability represents a critical missing access control flaw that fundamentally undermines the security posture of the application. This weakness manifests when specific API endpoints remain accessible without proper authentication mechanisms, creating an unauthorized access vector that can be exploited by any network user regardless of their credentials or authorization status. The vulnerability directly violates fundamental security principles by failing to implement proper identity verification and access controls, allowing malicious actors to interact with sensitive application functions without any form of authorization checks.
From a technical perspective, this missing access control vulnerability aligns with CWE-285, which addresses insufficient authorization issues in software systems. The flaw typically occurs when developers fail to implement comprehensive authentication checks across all API endpoints or when access control logic is bypassed during application development. In the context of DFXServer, this weakness enables attackers to invoke administrative or sensitive APIs directly through network requests without presenting valid credentials, thereby compromising the integrity and confidentiality of the system's operations.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it provides potential attackers with elevated privileges to manipulate application data, execute commands, or extract sensitive information. Network users can exploit this weakness to perform actions that should require specific authorization levels, including but not limited to modifying system configurations, accessing restricted data sets, or conducting privilege escalation attacks. The vulnerability creates an attack surface that can be leveraged for lateral movement within networks or as a foothold for more sophisticated attacks.
Security professionals should consider this vulnerability in relation to ATT&CK framework's T1078 privilege escalation techniques and T1566 initial access methods. The lack of proper authentication controls provides adversaries with an easy path to gain unauthorized system access, potentially leading to data breaches or system compromise. Organizations implementing DFXServer must prioritize immediate remediation through comprehensive access control implementation across all API endpoints.
Mitigation strategies should include implementing robust authentication mechanisms such as token-based authentication, session management controls, and role-based access control systems. Regular security assessments and penetration testing should be conducted to identify additional unauthorized access points within the application. Network segmentation and firewall rules can provide additional layers of protection by restricting direct network access to sensitive endpoints. The implementation of proper logging and monitoring capabilities will help detect unauthorized access attempts and provide evidence for forensic analysis in case of security incidents.