CVE-2025-32433

Description

Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20, a SSH server may allow an attacker to perform unauthenticated remote code execution (RCE). By exploiting a flaw in SSH protocol message handling, a malicious actor could gain unauthorized access to affected systems and execute arbitrary commands without valid credentials. This issue is patched in versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20. A temporary workaround involves disabling the SSH server or to prevent access via firewall rules.

From the Tenable Blog

CVE-2025-32433: Erlang/OTP SSH Unauthenticated Remote Code Execution Vulnerability

Published: 2025-04-18

Proof-of-concept code has been released after researchers disclosed a maximum severity remote code execution vulnerability in Erlang/OTP SSH. Successful exploitation could allow for complete takeover of affected devices.

References

https://thehackernews.com/2025/04/critical-erlangotp-ssh-vulnerability.html

https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2

https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891

https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892f

https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12

http://www.openwall.com/lists/oss-security/2025/04/18/6

http://www.openwall.com/lists/oss-security/2025/04/18/2

http://www.openwall.com/lists/oss-security/2025/04/18/1

http://www.openwall.com/lists/oss-security/2025/04/16/2

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3