CVE-2025-32433
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.
| Software | From | Fixed in |
|---|---|---|
| erlang / erlang/otp | - | 25.3.2.20 |
| erlang / erlang/otp | 26.0 | 26.2.5.11 |
| erlang / erlang/otp | 27.0 | 27.3.3 |
| cisco / confd_basic | - | 7.7.19.1 |
| cisco / confd_basic | 8.0.18 | 8.1.16.2 |
| cisco / confd_basic | 8.2 | 8.2.11.1 |
| cisco / confd_basic | 8.3 | 8.3.8.1 |
| cisco / confd_basic | 8.4 | 8.4.4.1 |
| cisco / network_services_orchestrator | - | 5.7.19.1 |
| cisco / network_services_orchestrator | 5.8 | 6.1.16.2 |
| cisco / network_services_orchestrator | 6.2 | 6.2.11.1 |
| cisco / network_services_orchestrator | 6.3 | 6.3.8.1 |
| cisco / network_services_orchestrator | 6.4 | 6.4.1.1 |
| cisco / network_services_orchestrator | 6.4.2 | 6.4.4.1 |
| cisco / smart_phy | - | 25.2 |
| cisco / cloud_native_broadband_network_gateway | - | 2025.03.1 |
| cisco / optical_site_manager | - | 25.2.1 |
| cisco / ncs_2000_shelf_virtualization_orchestrator_firmware | - | 25.1.1 |
| cisco / enterprise_nfv_infrastructure_software | - | 4.18 |
| cisco / ultra_cloud_core | - | 2025.03.1 |
| cisco / staros | - | 2025.03 |
| cisco / ultra_packet_core | - | 2025.03 |
| debian / debian_linux | 11.0 | 11.0.x |
- 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
- http://www.openwall.com/lists/oss-security/2025/04/19/1
- https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12
- https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892f
- https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891
- https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2
- https://github.com/ProDefense/CVE-2025-32433/blob/main/CVE-2025-32433.py
- https://lists.debian.org/debian-lts-announce/2025/04/msg00028.html
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-erlang-otp-ssh-xyZZy
- https://security.netapp.com/advisory/ntap-20250425-0001/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-32433
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