CVE-2025-32433
Erlang/OTP SSH Vulnerable to Pre-Authentication RCE
CVSS Score
10.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-306 |
| Vendor | erlang |
| Product | otp |
| Published | Apr 16, 2025 |
| Last Updated | Feb 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
erlang / otp
>= OTP-27.0-rc1, < OTP-27.3.3 >= OTP-26.0-rc1, < OTP-26.2.5.11 < OTP-25.3.2.20
References
github.com: https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2 github.com: https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12 github.com: https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892f github.com: https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891 openwall.com: http://www.openwall.com/lists/oss-security/2025/04/16/2 openwall.com: http://www.openwall.com/lists/oss-security/2025/04/18/1 openwall.com: http://www.openwall.com/lists/oss-security/2025/04/18/2 openwall.com: http://www.openwall.com/lists/oss-security/2025/04/18/6 openwall.com: http://www.openwall.com/lists/oss-security/2025/04/19/1 security.netapp.com: https://security.netapp.com/advisory/ntap-20250425-0001/ lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/04/msg00028.html github.com: https://github.com/ProDefense/CVE-2025-32433/blob/main/CVE-2025-32433.py sec.cloudapps.cisco.com: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-erlang-otp-ssh-xyZZy cisa.gov: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-32433