CVE-2026-35146 in DFXServer
Summary
by MITRE • 07/16/2026
HCL DFXServer is affected by an Unencrypted Communication vulnerability. The application permits users to establish connections over unencrypted channels via the HTTP protocol, which could allow a remote attacker to intercept network traffic and expose sensitive data transmitted between the user and the application.
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Analysis
by VulDB Data Team • 07/16/2026
The HCL DFXServer unencrypted communication vulnerability represents a critical security weakness that undermines the confidentiality of data transmitted between clients and the server. This flaw allows remote attackers to intercept network traffic without requiring any authentication or authorization, creating an environment where sensitive information can be easily accessed and potentially exploited. The vulnerability specifically affects connections established through the HTTP protocol, which operates without encryption mechanisms to protect data in transit. According to CWE-319, this classification encompasses vulnerabilities where sensitive data is transmitted over insecure channels, making it susceptible to interception attacks.
The technical implementation of this vulnerability stems from the application's failure to enforce secure communication protocols for user connections. When users establish sessions with DFXServer, the system defaults to HTTP rather than HTTPS, which means all data exchanged including authentication credentials, configuration parameters, and potentially sensitive business information flows in plaintext across the network. Network sniffing tools can readily capture this unencrypted traffic, enabling attackers to perform man-in-the-middle attacks or simply monitor network communications. This weakness directly violates fundamental security principles outlined in the OWASP Top Ten, specifically addressing the risk of sensitive data exposure through insecure communication channels.
The operational impact of this vulnerability extends beyond simple data interception to encompass potential system compromise and business disruption. Attackers who successfully intercept unencrypted communications can obtain session tokens, user credentials, and other sensitive information that may lead to unauthorized access to the DFXServer environment. This weakness creates opportunities for privilege escalation attacks where compromised credentials can be used to gain administrative access to the application. Additionally, the exposure of configuration data and business-sensitive information could result in competitive disadvantages or regulatory compliance violations. The vulnerability aligns with ATT&CK technique T1046 which covers network service scanning and T1566 which involves credential harvesting through network interception.
Organizations utilizing HCL DFXServer should implement immediate mitigations to address this vulnerability. The primary recommendation involves enforcing HTTPS protocol usage for all client-server communications, ensuring that all connections are encrypted using TLS 1.2 or higher encryption standards. Configuration changes must be implemented at the server level to redirect HTTP traffic to secure HTTPS endpoints and disable insecure HTTP connections entirely. Network administrators should also deploy intrusion detection systems capable of monitoring for unencrypted communication attempts and implement network segmentation policies to limit exposure. Regular security assessments should verify that all communication channels are properly encrypted, and automated tools can help identify any remaining unencrypted connections within the environment. Compliance with industry standards including NIST SP 800-53 and ISO/IEC 27001 requires organizations to maintain secure communication channels for all sensitive data exchanges.