CRITICAL

CVE-2025-32433

Cisco Confd Basic 2025-04-16 CVSS v3.1

CVSS

KEV

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.

Summary dbcve.org

A critical vulnerability in Erlang/OTP's SSH server allows unauthenticated remote code execution due to improper handling of SSH protocol messages. Attackers can execute arbitrary commands without valid credentials, gaining full system access.

Mitigation

Upgrade Erlang/OTP to versions OTP-27.3.3, OTP-26.2.5.11, or OTP-25.3.2.20 or later. If immediate patching is not possible, disable the SSH server or restrict access via firewall rules.

Proof of Concept

Patch Commit

Weakness (CWE)

CWE-306 Missing Authentication

EPSS Score

98.75%

Probability of exploitation in next 30 days

99.9th percentile

References

https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12 Patch https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892f Patch https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891 Patch https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2 Vendor Advisory http://www.openwall.com/lists/oss-security/2025/04/16/2 Mailing List http://www.openwall.com/lists/oss-security/2025/04/18/1 Mailing List http://www.openwall.com/lists/oss-security/2025/04/18/2 Mailing List http://www.openwall.com/lists/oss-security/2025/04/18/6 Mailing List http://www.openwall.com/lists/oss-security/2025/04/19/1 Mailing List https://lists.debian.org/debian-lts-announce/2025/04/msg00028.html Third 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.py Exploit https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-erlang-otp-ssh-xyZZy Third Party Advisory https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-32433 US Government Resource

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Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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