CVE-2000-0086 in Timbuktu Pro
Summary
by MITRE
Netopia Timbuktu Pro sends user IDs and passwords in cleartext, which allows remote attackers to obtain them via sniffing.
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Analysis
by VulDB Data Team • 04/20/2026
The vulnerability identified as CVE-2000-0086 represents a critical security flaw in Netopia Timbuktu Pro remote access software that fundamentally compromises authentication security through plaintext credential transmission. This issue arises from the application's failure to implement encryption for sensitive authentication data during network communication, creating an inherent weakness that directly violates fundamental security principles of secure remote access protocols.
The technical flaw manifests in the application's network communication architecture where user credentials are transmitted without any form of encryption or obfuscation. When users authenticate to the Timbuktu Pro service, their usernames and passwords are sent in cleartext format across the network, making them immediately accessible to any network monitoring tool or attacker with access to the network traffic. This vulnerability specifically affects the authentication phase of the remote access process, where the initial credential exchange occurs before any secure session establishment can take place.
The operational impact of this vulnerability is severe and far-reaching, as it enables passive network sniffing attacks to directly capture authentication credentials without requiring any sophisticated attack techniques or privileged access. Network administrators and security professionals can easily intercept these credentials using standard packet capture tools such as tcpdump or wireshark, rendering the entire authentication system ineffective against network-based attacks. This weakness creates a persistent threat vector that can be exploited by anyone with access to the network segment where the Timbuktu Pro traffic flows, including malicious insiders or attackers positioned within the network infrastructure.
The vulnerability aligns with CWE-312 (Cleartext Storage of Sensitive Information) and CWE-316 (Cleartext Transmission of Sensitive Information) classifications, which specifically address the improper handling of sensitive data in network communications. From an adversarial perspective, this vulnerability maps directly to ATT&CK technique T1046 (Network Service Scanning) and T1567 (Server Software Component) as attackers can leverage network sniffing capabilities to harvest credentials from legitimate network traffic. The vulnerability also demonstrates characteristics of T1557 (Adversary-in-the-Middle) where attackers can intercept and manipulate network communications without detection.
Mitigation strategies for this vulnerability require immediate implementation of network segmentation and encryption protocols to protect credential transmission. Organizations should deploy network monitoring solutions to detect and alert on cleartext credential transmission, while implementing mandatory encryption for all remote access protocols. The most effective long-term solution involves migrating away from legacy applications like Timbuktu Pro that lack modern encryption capabilities and transitioning to secure remote access solutions that implement strong authentication mechanisms such as SSH, TLS, or other encrypted communication protocols. Additionally, network administrators should implement network access controls and firewall rules to limit exposure of vulnerable services to untrusted networks, while ensuring that all remote access implementations follow current security standards and best practices for credential protection.