CVE-2025-20309
Last modified
CVE-2025-20309 is a critical-severity vulnerability rated 10/10 on the CVSS scale. 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. EPSS estimates a 1.06% chance of exploitation in the next 30 days.
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Unified Communications Manager | 15.0.1.13010-1 |
| Cisco | Unified Communications Manager | 15.0.1.13011-1 |
| Cisco | Unified Communications Manager | 15.0.1.13012-1 |
| Cisco | Unified Communications Manager | 15.0.1.13013-1 |
| Cisco | Unified Communications Manager | 15.0.1.13014-1 |
| Cisco | Unified Communications Manager | 15.0.1.13015-1 |
| Cisco | Unified Communications Manager | 15.0.1.13016-1 |
| Cisco | Unified Communications Manager | 15.0.1.13017-1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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