Critical Erlang/OTP SSH Vulnerability (CVE-2025-32433): Technical Analysis and Mitigation Strategies

Critical Erlang/OTP SSH Vulnerability Overview of the Vulnerability In April 2025, researchers identified a critical security flaw in the Erlang/Open Telecom Platform (OTP) SSH implementation, tracked as CVE-2025-32433. This vulnerability received the maximum CVSS score of 10.0, allowing unauthenticated attackers to execute arbitrary code on vulnerable systems. This article provides a comprehensive analysis of the vulnerability’s technical mechanisms, affected systems, and remediation measures. Technical Breakdown and Attack Methodology Flaw in SSH Protocol Handling The vulnerability stems from improper processing of SSH protocol messages. According to the research team at Ruhr University Bochum, attackers can send specific connection protocol messages before …