CVE-2025-32433

Summary

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.

Impact & exploitability

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products we track (1)

Recommendation

This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.

Official patch: https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12 ↗

Additional information

• NVD record
• https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12Patch
• https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892fPatch
• https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891Patch
• https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2Advisory
• http://www.openwall.com/lists/oss-security/2025/04/16/2
• http://www.openwall.com/lists/oss-security/2025/04/18/1
• http://www.openwall.com/lists/oss-security/2025/04/18/2
• http://www.openwall.com/lists/oss-security/2025/04/18/6