NVD

CVE-2025-20309 Detail

Description

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.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

Nist CVSS score does not match with CNA score

CNA: Cisco Systems, Inc.

Base Score: 10.0 CRITICAL

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssh-m4UBdpE7	Cisco Systems, Inc.	Patch Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-798	Use of Hard-coded Credentials	Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Initial Analysis by NIST 7/03/2025 11:23:28 AM

Action

Type

Old Value

New Value

Added

CPE Configuration

OR
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13010-1:*:*:*:-:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13010-1:*:*:*:session_management:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13011-1:*:*:*:-:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13011-1:*:*:*:session_management:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13012-1:*:*:*:-:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13012-1:*:*:*:session_management:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13013-1:*:*:*:-:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13014-1:*:*:*:-:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13015-1:*:*:*:-:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13016-1:*:*:*:-:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13017-1:*:*:*:-:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13013-1:*:*:*:session_management:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13014-1:*:*:*:session_management:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13015-1:*:*:*:session_management:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13016-1:*:*:*:session_management:*:*:*
          *cpe:2.3:a:cisco:unified_communications_manager:15.0.1.13017-1:*:*:*:session_management:*:*:*

Added

Reference Type

Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssh-m4UBdpE7 Types: Patch, Vendor Advisory

New CVE Received from Cisco Systems, Inc. 7/02/2025 1:15:52 PM

Action	Type	New Value
Added	Description	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.
Added	CVSS V3.1	AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Added	CWE	CWE-798
Added	Reference	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssh-m4UBdpE7

Quick Info

CVE Dictionary Entry:
CVE-2025-20309
NVD Published Date:
07/02/2025
NVD Last Modified:
06/17/2026
Source:
Cisco Systems, Inc.

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