CVEvulnerability

CVE-2025-32433

10.0 CRITICAL Known exploited Published 2025-04-16 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Erlang Erlang/OTP SSH Server Missing Authentication for Critical Function Vulnerability — Erlang Erlang/OTP

Erlang Erlang/OTP SSH server contains a missing authentication for critical function vulnerability. This could allow an attacker to execute arbitrary commands without valid credentials, potentially leading to unauthenticated remote code execution (RCE). By exploiting a flaw in how SSH protocol messages are handled, a malicious actor could gain unauthorized access to affected systems. This vulnerability could affect various products that implement Erlang/OTP SSH server, including—but not limited to—Cisco, NetApp, and SUSE.

Added to KEV: 2025-06-09
Remediation due: 2025-06-30
Ransomware use: Unknown
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.
Notes: This vulnerability affects a common open-source project, third-party library, or a protocol used by different products. For more information, please see: https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2 ; https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-erlang-otp-ssh-xyZZy ; https://nvd.nist.gov/vuln/detail/CVE-2025-32433

Status: Analyzed
Published: 2025-04-16
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 ([email protected]): 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses: CWE-306

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.

Affected configurations

• erlang erlang\/otp (< 25.3.2.20) • erlang erlang\/otp (>= 26.0 < 26.2.5.11) • erlang erlang\/otp (>= 27.0 < 27.3.3) • cisco confd basic (< 7.7.19.1) • cisco confd basic (>= 8.0.18 < 8.1.16.2) • cisco confd basic (>= 8.2 < 8.2.11.1) • cisco confd basic (>= 8.3 < 8.3.8.1) • cisco confd basic (>= 8.4 < 8.4.4.1) • cisco network services orchestrator (< 5.7.19.1) • cisco network services orchestrator (>= 5.8 < 6.1.16.2) • cisco network services orchestrator (>= 6.2 < 6.2.11.1) • cisco network services orchestrator (>= 6.3 < 6.3.8.1) • cisco network services orchestrator (>= 6.4 < 6.4.1.1) • cisco network services orchestrator (>= 6.4.2 < 6.4.4.1) • cisco cloud native broadband network gateway (< 2025.03.1) • cisco inode manager • cisco smart phy (< 25.2) • cisco ultra packet core (< 2025.03) • cisco ultra services platform • cisco staros (< 2025.03) • cisco optical site manager (< 25.2.1) • cisco ncs 2000 shelf virtualization orchestrator firmware (< 25.1.1) • cisco enterprise nfv infrastructure software (< 4.18) • cisco ultra cloud core (< 2025.03.1) • cisco rv160w firmware • cisco rv260 firmware • cisco rv160 firmware • cisco rv260p firmware • cisco rv260w firmware • cisco rv340 firmware • cisco rv340w firmware • cisco rv345 firmware • cisco rv345p firmware • debian debian linux 11.0

Weakness · CWE (1)

CWE-306 Missing Authentication for Critical Functionality weakness

References