CVE-2025-32433

critical-risk
Published 2025-04-16

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.

Do I need to act?

!
53.6% chance of exploitation in next 30 days
EPSS score — higher than 46% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
+
Fix available
Upgrade to: 10e20b1dbe39b056fab430e50b08cb4f3696ae87, 9f6c4eb54823324d1e6f8cb95c15feb09f09044e, ae0052c7f891ce805e2b53493a5304e2ee008aeb
10
CVSS 10.0/10 Critical
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Cisco Debian Erlang

References (14)

Patch https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12
Patch https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892f
Patch https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891
Vendor Advisory https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2
Mailing List 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
Third Party Advisory https://lists.debian.org/debian-lts-announce/2025/04/msg00028.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20250425-0001/
Exploit https://github.com/ProDefense/CVE-2025-32433/blob/main/CVE-2025-32433.py
Third Party Advisory https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ci...
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-...
79
/ 100
critical-risk
Severity 33/34 · Critical
Exploitability 25/34 · High
Exposure 21/34 · High