CVE-2025-20309
Cisco Unified Communications Manager Static SSH Credentials Vulnerability
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.
Weakness: CWE-798
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Unified Communications Manager | Other Products | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco Unified Communications Manager
Vendor advisory
Cisco Unified Communications Manager Static SSH Credentials Vulnerability
Cisco’s rating: Critical (advisory CVSS 10.0) · Published Jul 2, 2025
Bug ID: CSCwp27755
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from