CVE-2025-32433

16.04.2025, 22:15

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	10 CRITICAL	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
GitHub_M	CNA	10 CRITICAL	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVE	ADP	---				---
CISA-ADP	ADP	---				---

Awaiting analysis

This vulnerability is currently awaiting analysis.

Base Score

CVSS 3.x

EPSS Score

Percentile: 87%

Debian Releases

Debian Product

Codename

erlang

bullseye	vulnerable
bullseye (security)	1:23.2.6+dfsg-1+deb11u2 fixed
bookworm	vulnerable
bookworm (security)	1:25.2.3+dfsg-1+deb12u1 fixed
sid	1:27.3.3+dfsg-1 fixed
trixie	1:27.3.3+dfsg-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

erlang

plucky	Fixed 1:27.3+dfsg-1ubuntu1.1 released
oracular	Fixed 1:25.3.2.12+dfsg-1ubuntu2.3 released
noble	Fixed 1:25.3.2.8+dfsg-1ubuntu4.3 released
jammy	Fixed 1:24.2.1+dfsg-1ubuntu0.4 released
focal	Fixed 1:22.2.7+dfsg-1ubuntu0.5 released
bionic	needs-triage
xenial	needs-triage
trusty	needs-triage

Common Weakness Enumeration

CWE-306 - Missing Authentication for Critical Function
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Vulnerability Media Exposure

References

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

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/ProDefense/CVE-2025-32433/blob/main/CVE-2025-32433.py