Cisco Unified Communications Manager (CUCM) Static SSH Credentials (cisco-sa-cucm-ssh-m4UBdpE7)

critical Nessus Plugin ID 241369

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, Cisco Unified Communications Products is affected by a hard-coded credentials vulnerability.

- A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to log in to an affected device using the root account, which has default, static credentials that cannot be changed or deleted. This vulnerability is due to the presence of static user credentials for the root account that are reserved for use during development. An attacker could exploit this vulnerability by using the account to log in to an affected system. A successful exploit could allow the attacker to log in to the affected system and execute arbitrary commands as the root user. (CVE-2025-20309)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCwp27755

See Also

http://www.nessus.org/u?728c10a3

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwp27755

Plugin Details

Severity: Critical

ID: 241369

File Name: cisco-sa-cucm-ssh-m4UBdpE7.nasl

Version: 1.1

Type: combined

Family: CISCO

Published: 7/4/2025

Updated: 7/4/2025

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v2

Risk Factor: Info

Base Score: 0

Vector: CVSS2#AV:L/AC:H/Au:M/C:N/I:N/A:N

CVSS Score Source: CVE-2025-20309

CVSS v3

Risk Factor: Critical

Base Score: 10

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/a:cisco:unified_communications_manager

Required KB Items: Settings/ParanoidReport, Host/Cisco/CUCM/Version

Patch Publication Date: 7/2/2025

Vulnerability Publication Date: 7/2/2025

Reference Information

CVE: CVE-2025-20309

CISCO-SA: cisco-sa-cucm-ssh-m4UBdpE7

IAVA: 2025-A-0469

CISCO-BUG-ID: CSCwp27755