CVE-2024-32387 in KerOS
Summary
by MITRE • 07/17/2026
An issue in Kerlink Kerlink Wirnet iStation 868 KerOS v.4.3.3_20200803132042 allows a remote attacker to obtain sensitive information via the community string component.
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Analysis
by VulDB Data Team • 07/17/2026
The vulnerability exists within the Kerlink Wirnet iStation 868 KerOS version 4.3.3_20200803132042, a wireless networking device designed for industrial IoT deployments. This particular device implements SNMP (Simple Network Management Protocol) functionality which is commonly used for network monitoring and management purposes. The flaw manifests through the community string component, which serves as a basic form of authentication within SNMP protocols. A community string acts as a password or secret key that must be provided by clients attempting to access SNMP-managed devices, with read-only and read-write variants typically defined for different access levels.
The security weakness stems from improper handling of the community string parameter within the device's SNMP implementation. When an attacker successfully crafts and sends a malicious SNMP request containing a specific community string value, they can bypass normal authentication mechanisms and gain unauthorized access to sensitive configuration data, system information, and potentially operational parameters that should remain protected. This represents a fundamental failure in access control implementation where the system does not adequately validate or sanitize input values provided through the community string field.
The operational impact of this vulnerability extends beyond simple information disclosure as it enables attackers to gather intelligence about the device's internal configuration, firmware versions, network topology details, and potentially other connected systems within the same network segment. Such reconnaissance data can facilitate further attacks including privilege escalation attempts, exploitation of additional vulnerabilities present in the device or its network environment, and targeted attacks against other systems that may share similar configurations or security weaknesses.
From a cybersecurity perspective, this vulnerability aligns with CWE-287 which addresses improper authentication issues within network protocols, and represents a clear violation of the principle of least privilege as defined by NIST SP 800-53. The attack vector is classified as remote since no physical access or local network presence is required for exploitation, making it particularly dangerous in deployed industrial environments where such devices may be accessible from external networks. Based on MITRE ATT&CK framework, this vulnerability maps to T1071.004 (Application Layer Protocol: DNS) and T1566 (Phishing) as attackers could use the gathered information to craft more sophisticated social engineering attacks or exploit additional system weaknesses. Organizations should implement immediate mitigations including disabling SNMP if not required, enforcing strong community string policies with complex values, implementing network segmentation, and applying firmware updates when available from the vendor to address this specific authentication bypass vulnerability.