Vulnerability Database

383,371

Total vulnerabilities in the database

CVE-2025-20277 — cisco / unified_contact_center_express

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

A vulnerability in the web-based management interface of Cisco Unified CCX could allow an authenticated, local attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials.

This vulnerability is due to improper limitation of a pathname to a restricted directory (path traversal). An attacker could exploit this vulnerability by sending a crafted web request to an affected device, followed by a specific command through an SSH session. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system of an affected device as a low-privilege user. A successful exploit could also allow the attacker to undertake further actions to elevate their privileges to root.

  • Published: Jun 4, 2025
  • Updated: Sep 13, 2026
  • CVE: CVE-2025-20277
  • Severity: Low
  • Exploit:
  • CISA KEV:

CVSS v3:

  • Severity: Low
  • Score: 3.4
  • AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Software Affected versions
cisco / unified_contact_center_express = 8.5(1)
cisco / unified_contact_center_express = 9.0(2)su3es04
cisco / unified_contact_center_express = 10.0(1)su1
cisco / unified_contact_center_express = 10.0(1)su1es04
cisco / unified_contact_center_express = 10.5(1)
cisco / unified_contact_center_express = 10.5(1)su1
cisco / unified_contact_center_express = 10.5(1)su1es10
cisco / unified_contact_center_express = 10.6(1)
cisco / unified_contact_center_express = 10.6(1)su1
cisco / unified_contact_center_express = 10.6(1)su2
cisco / unified_contact_center_express = 10.6(1)su2es04
cisco / unified_contact_center_express = 10.6(1)su3
cisco / unified_contact_center_express = 10.6(1)su3es01
cisco / unified_contact_center_express = 10.6(1)su3es02
cisco / unified_contact_center_express = 10.6(1)su3es03
cisco / unified_contact_center_express = 11.0(1)su1
cisco / unified_contact_center_express = 11.0(1)su1es02
cisco / unified_contact_center_express = 11.0(1)su1es03
cisco / unified_contact_center_express = 11.5(1)es01
cisco / unified_contact_center_express = 11.5(1)su1
cisco / unified_contact_center_express = 11.5(1)su1es01
cisco / unified_contact_center_express = 11.5(1)su1es02
cisco / unified_contact_center_express = 11.5(1)su1es03
cisco / unified_contact_center_express = 11.6(1)
cisco / unified_contact_center_express = 11.6(1)es01
cisco / unified_contact_center_express = 11.6(1)es02
cisco / unified_contact_center_express = 11.6(2)
cisco / unified_contact_center_express = 11.6(2)es01
cisco / unified_contact_center_express = 11.6(2)es02
cisco / unified_contact_center_express = 11.6(2)es03
cisco / unified_contact_center_express = 11.6(2)es04
cisco / unified_contact_center_express = 11.6(2)es05
cisco / unified_contact_center_express = 11.6(2)es06
cisco / unified_contact_center_express = 11.6(2)es07
cisco / unified_contact_center_express = 11.6(2)es08
cisco / unified_contact_center_express = 12.0(1)
cisco / unified_contact_center_express = 12.0(1)es01
cisco / unified_contact_center_express = 12.0(1)es02
cisco / unified_contact_center_express = 12.0(1)es03
cisco / unified_contact_center_express = 12.0(1)es04
cisco / unified_contact_center_express = 12.5(1)
cisco / unified_contact_center_express = 12.5(1)_su01_es01
cisco / unified_contact_center_express = 12.5(1)_su01_es02
cisco / unified_contact_center_express = 12.5(1)_su01_es03
cisco / unified_contact_center_express = 12.5(1)_su02_es01
cisco / unified_contact_center_express = 12.5(1)_su02_es02
cisco / unified_contact_center_express = 12.5(1)_su02_es03
cisco / unified_contact_center_express = 12.5(1)_su02_es04
cisco / unified_contact_center_express = 12.5(1)_su03_es01
cisco / unified_contact_center_express = 12.5(1)_su03_es02
cisco / unified_contact_center_express = 12.5(1)_su03_es03
cisco / unified_contact_center_express = 12.5(1)_su03_es04
cisco / unified_contact_center_express = 12.5(1)_su03_es05
cisco / unified_contact_center_express = 12.5(1)_su03_es06
cisco / unified_contact_center_express = 12.5(1)es01
cisco / unified_contact_center_express = 12.5(1)es02
cisco / unified_contact_center_express = 12.5(1)es03
cisco / unified_contact_center_express = 12.5(1)su1
cisco / unified_contact_center_express = 12.5(1)su2
cisco / unified_contact_center_express = 12.5(1)su3

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.