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.

Classification

CVE ID: CVE-2025-32433

CVSS Base Severity: CRITICAL

CVSS Base Score: 10.0

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

Affected Products

Vendor: erlang

Product: otp

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.39% (probability of being exploited)

EPSS Percentile: 58.72% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-32433
https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2
https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12
https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892f
https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891

Timeline