CVE-2025-32433
erlang otp
Published 16 Apr 2025 · updated 17 Jun 2026 · Analyzed
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 9 Jun 2025, with a remediation deadline of 30 Jun 2025 for US federal agencies.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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.
References
- github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12 · Patch
- github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892f · Patch
- github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891 · Patch
- github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2 · Vendor Advisory
- www.openwall.com/lists/oss-security/2025/04/16/2 · Mailing List
- www.openwall.com/lists/oss-security/2025/04/18/1 · Mailing List
- www.openwall.com/lists/oss-security/2025/04/18/2 · Mailing List
- www.openwall.com/lists/oss-security/2025/04/18/6 · Mailing List
- www.openwall.com/lists/oss-security/2025/04/19/1 · Mailing List
- lists.debian.org/debian-lts-announce/2025/04/msg00028.html · Third Party Advisory
- security.netapp.com/advisory/ntap-20250425-0001/ · Third Party Advisory
- github.com/ProDefense/CVE-2025-32433/blob/main/CVE-2025-32433.py · Exploit
- sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-erlang-otp-ssh-xyZZy · Third Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-32433 · US Government Resource