CVE-2025-32433

Published Apr 16, 2025

Last updated 2 months ago

Erlang

OTP

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-32433 is a vulnerability found in the Erlang/OTP SSH server. It stems from a flaw in the SSH protocol message handling, which allows an attacker with network access to execute arbitrary code on the server without authentication. Specifically, the vulnerability enables a malicious actor to send connection protocol messages before authentication takes place. Successful exploitation could lead to full compromise of the host, unauthorized access, manipulation of sensitive data, or denial-of-service attacks.

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.
Source: security-advisories@github.com
NVD status: Analyzed
Products: erlang\/otp, confd_basic, network_services_orchestrator, cloud_native_broadband_network_gateway, inode_manager, smart_phy, ultra_packet_core, ultra_services_platform, staros, optical_site_manager, ncs_2000_shelf_virtualization_orchestrator_firmware, enterprise_nfv_infrastructure_software, ultra_cloud_core, rv160w_firmware, rv260_firmware, rv160_firmware, rv260p_firmware, rv260w_firmware, rv340_firmware, rv340w_firmware, rv345_firmware, rv345p_firmware

Risk scores

CVSS 3.1

Type: Secondary
Base score: 10
Impact score: 6
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Severity: CRITICAL

Known exploits

Data from CISA

Vulnerability name: Erlang Erlang/OTP SSH Server Missing Authentication for Critical Function Vulnerability
Exploit added on: Jun 9, 2025
Exploit action due: Jun 30, 2025
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.

Weaknesses

security-advisories@github.com: CWE-306

Hype score: Not currently trending

Configurations

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References

Sources include official advisories and independent security research.