CVE-2025-32433

Publication date 16 April 2025

Last updated 17 July 2025

Ubuntu priority

High

Why this priority?

Cvss 3 Severity Score

10.0 · Critical

Score breakdown

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.

Why is this CVE high priority?

unauthenticated remote code execution (RCE)

Learn more about Ubuntu priority

Status

Package Ubuntu Release Status
erlang 25.04 plucky
Fixed 1:27.3+dfsg-1ubuntu1.1
24.10 oracular
Fixed 1:25.3.2.12+dfsg-1ubuntu2.3
24.04 LTS noble
Fixed 1:25.3.2.8+dfsg-1ubuntu4.3
22.04 LTS jammy
Fixed 1:24.2.1+dfsg-1ubuntu0.4
20.04 LTS focal
Fixed 1:22.2.7+dfsg-1ubuntu0.5
18.04 LTS bionic
Fixed 1:20.2.2+dfsg-1ubuntu2+esm1
16.04 LTS xenial
Fixed 1:18.3-dfsg-1ubuntu3.1+esm1
14.04 LTS trusty
Not affected

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
erlang

Severity score breakdown

Parameter Value
Base score 10.0 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

Other references