Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Erlang | Erlang\/Otp | < 25.3.2.20 |
| Cisco | Confd Basic | < 7.7.19.1 |
| Cisco | Network Services Orchestrator | < 5.7.19.1 |
| Cisco | Cloud Native Broadband Network Gateway | < 2025.03.1 |
| Cisco | Inode Manager | - |
| Cisco | Smart Phy | < 25.2 |
| Cisco | Ultra Packet Core | < 2025.03 |
| Cisco | Ultra Services Platform | - |
| Cisco | Staros | < 2025.03 |
| Cisco | Optical Site Manager | < 25.2.1 |
| Cisco | Ncs 1001 | - |
| Cisco | Ncs 1002 | - |
| Cisco | Ncs 1004 | - |
| Cisco | Ncs 2000 Shelf Virtualization Orchestrator Firmware | < 25.1.1 |
| Cisco | Ncs 2000 Shelf Virtualization Orchestrator Module | - |
| Cisco | Enterprise Nfv Infrastructure Software | < 4.18 |
| Cisco | Ultra Cloud Core | < 2025.03.1 |
| Cisco | Rv160W Firmware | - |
| Cisco | Rv160W | - |
| Cisco | Rv260 Firmware | - |
Related Weaknesses (CWE)
References
- 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-fgq5-7wc2Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/04/16/2Mailing List
- http://www.openwall.com/lists/oss-security/2025/04/18/1Mailing List
- http://www.openwall.com/lists/oss-security/2025/04/18/2Mailing List
- http://www.openwall.com/lists/oss-security/2025/04/18/6Mailing List
- http://www.openwall.com/lists/oss-security/2025/04/19/1Mailing List
- https://lists.debian.org/debian-lts-announce/2025/04/msg00028.htmlThird Party Advisory
- https://security.netapp.com/advisory/ntap-20250425-0001/Third Party Advisory
- https://github.com/ProDefense/CVE-2025-32433/blob/main/CVE-2025-32433.pyExploit
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ciThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-US Government Resource
FAQ
What is CVE-2025-32433?
CVE-2025-32433 is a vulnerability with a CVSS score of 10.0 (CRITICAL). 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 remo...
How severe is CVE-2025-32433?
CVE-2025-32433 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-32433?
Check the references section above for vendor advisories and patch information. Affected products include: Erlang Erlang\/Otp, Cisco Confd Basic, Cisco Network Services Orchestrator, Cisco Cloud Native Broadband Network Gateway, Cisco Inode Manager.