Hard-coded credentials SSH credentials in Cisco Unified Communications Manager

1) Use of hard-coded credentials

EUVDB-ID: #VU112113

Risk: Critical

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red]

CVE-ID: CVE-2025-20309

CWE-ID: CWE-798 - Use of Hard-coded Credentials

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain full access to vulnerable system.

The vulnerability exists due to presence of hard-coded SSH credentials in application code. A remote unauthenticated attacker can access the affected system using the hard-coded credentials.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Unified Communications Manager: 15.0.1.13010-1 - 15.0.1.13017-1

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_unified_communications_manager:15.0.1.13010-1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_unified_communications_manager:15.0.1.13011-1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_unified_communications_manager:15.0.1.13012-1:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssh-m4UBdpE7
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwp27755

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.