CVE-2026-32960 in SD-330AC
Summary
by MITRE • 04/20/2026
SD-330AC and AMC Manager provided by silex technology, Inc. contain an issue with a sensitive information in resource not removed before reuse. An attacker may login to the device without knowing the password by sending a crafted packet.
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Analysis
by VulDB Data Team • 04/20/2026
The vulnerability identified in SD-330AC and AMC Manager devices from Silex Technology Inc. represents a critical security flaw involving improper handling of sensitive information within system resources. This issue falls under the category of information disclosure vulnerabilities where sensitive data remains accessible in memory or resource structures even after it should have been properly cleared or invalidated. The flaw specifically manifests when the system fails to adequately remove sensitive information from resources before these resources are reused, creating a persistent vector for unauthorized access.
The technical implementation of this vulnerability stems from inadequate resource management practices within the authentication and session handling mechanisms of these network devices. When legitimate authentication attempts occur, sensitive information such as authentication tokens, session identifiers, or credential-related data may be stored in memory locations that are subsequently reused without proper sanitization. This creates a scenario where an attacker can exploit the residual sensitive data to gain unauthorized access to the device. The vulnerability is particularly concerning because it allows for password-less authentication through the manipulation of network packets, bypassing traditional authentication mechanisms entirely.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential complete system compromise and unauthorized network control. Attackers can leverage this flaw to establish persistent access to network infrastructure, potentially leading to data exfiltration, network disruption, or use as a foothold for further attacks within the network perimeter. The vulnerability affects network management systems that are often critical infrastructure components, making the potential impact severe for organizations relying on these devices for network monitoring and management. This issue particularly aligns with attack patterns described in the attack tree methodology where credential compromise leads to system takeover without requiring traditional password guessing or brute force attacks.
Security professionals should consider this vulnerability in the context of CWE-200, which addresses "Information Exposure," and CWE-312, which covers "Cleartext Storage of Sensitive Information." The flaw also corresponds to techniques described in the MITRE ATT&CK framework under T1566 for credential access and T1071 for application layer protocols. Organizations should implement immediate mitigations including firmware updates from Silex Technology, network segmentation to limit access to these devices, and enhanced monitoring for unusual authentication patterns. Additionally, implementing proper resource sanitization protocols and conducting regular security assessments of network infrastructure components can help prevent similar issues from occurring in other systems. The vulnerability underscores the critical importance of proper resource management and information handling practices in embedded systems and network infrastructure devices where security flaws can have cascading effects on overall network security posture.