Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD 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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
8 versions affected across 1 product
| Date | Total | Labels |
|---|
| 2026-04-22 | 1 | General1 |
| 2026-05-25 | 1 | Disclosure1 |
@VxoTay @changwei1006 and the societal marginalization of ex-convicts, choosing instead to view the world—and even notorious hardcoded flaws like CWE-798, CVE-2021-40119, CVE-2025-20309, CVE-2016-1909, and CVE-2010-2772.
Post summary
The tweet simply enumerates several CVE identifiers without offering any additional technical, exploit, or mitigation information.
CVE-2025-20309 - Critical default root credentials in #Cisco Unified CM and Unified CM SME. Unauthenticated remote login with static, unchangeable creds. CVSS 10. No patch available. Isolate affected systems immediately. #CVE #infosec #CVEAlert #networking More: https://www.valtersit.com/cve/CVE-2025-20309/
Post summary
The post announces a critical CVE in Cisco Unified CM with default root credentials enabling unauthenticated remote login; no patch exists yet and isolation is recommended.
16 of 16 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | cisco | unified_communications_manager | 15.0.1.13010-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13010-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13011-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13011-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13012-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13012-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13013-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13013-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13014-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13014-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13015-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13015-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13016-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13016-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13017-1 | - | - |
| App | cisco | unified_communications_manager | 15.0.1.13017-1 | - | - |