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CVE-2025-20354— Cisco Unified Contact Center Express Remote Code Execution Vulnerability

Quick assessment

Affected
Cisco Cisco Unified Contact Center Express
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco Unified Contact Center Express（Unified CCX）是美国思科（Cisco）公司的一款统一通信解决方案中的客户关系管理组件。该组件支持自助语音服务、呼叫分配和客户访问控制等功能。 Cisco Unified Contact Center Express（Unified CCX）存在代码问题漏洞，该漏洞源于Java RMI进程的认证机制不当，可能导致未经验证的远程攻击者上传任意文件并以root权限执行任意命令。

CVSS 9.8 · Critical EPSS 0.87% · P57
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I. Basic Information for CVE-2025-20354

Vulnerability Information
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Vulnerability Title
Cisco Unified Contact Center Express Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Java Remote Method Invocation (RMI) process of Cisco Unified CCX could allow an unauthenticated, remote attacker to upload arbitrary files and execute arbitrary commands with root permissions on an affected system. This vulnerability is due to improper authentication mechanisms that are associated to specific Cisco Unified CCX features. An attacker could exploit this vulnerability by uploading a crafted file to an affected system through the Java RMI process. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system and elevate privileges to root.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Unified Contact Center Express 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Unified Contact Center Express（Unified CCX）是美国思科（Cisco）公司的一款统一通信解决方案中的客户关系管理组件。该组件支持自助语音服务、呼叫分配和客户访问控制等功能。 Cisco Unified Contact Center Express（Unified CCX）存在代码问题漏洞，该漏洞源于Java RMI进程的认证机制不当，可能导致未经验证的远程攻击者上传任意文件并以root权限执行任意命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco Unified Contact Center Express 10.5(1)SU1 -

II. Public POCs for CVE-2025-20354

# POC Description Source Link Shenlong Link
1 CVE-2025-20354 https://github.com/B1ack4sh/Blackash-CVE-2025-20354 POC Details
2 CVE-2025-20354 https://github.com/Ashwesker/Blackash-CVE-2025-20354 POC Details
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III. Intelligence Information for CVE-2025-20354

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Vendor Advisories for CVE-2025-20354 (1)

Same Patch Batch · Cisco · 2025-11-05 · 11 CVEs total

CVE-2025-20358 9.4 CRITICAL Cisco Unified Contact Center Express Editor Authentication Bypass Vulnerability
CVE-2025-20343 8.6 HIGH Cisco Identity Services Engine Radius Suppression Denial of Service Vulnerability
CVE-2025-20375 6.5 MEDIUM Cisco Unified Contact Center Express Arbitrary File Upload Vulnerability
CVE-2025-20376 6.5 MEDIUM Cisco Unified Contact Center Express Remote Code Execution Vulnerability
CVE-2025-20304 5.4 MEDIUM Cisco Identity Services Engine 跨站脚本漏洞
CVE-2025-20303 5.4 MEDIUM Cisco Identity Services Engine 跨站脚本漏洞
CVE-2025-20374 4.9 MEDIUM Cisco Unified Contact Center Express Arbitrary File Download Vulnerability
CVE-2025-20289 4.8 MEDIUM Cisco Identity Services Engine 跨站脚本漏洞
CVE-2025-20305 4.3 MEDIUM Cisco Identity Services Engine 安全漏洞
CVE-2025-20377 4.3 MEDIUM Cisco Unified Intelligence Center API Information Disclosure Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Unified Contact Center Express
Same vendor: Cisco
Same weakness: CWE-434

V. Comments for CVE-2025-20354

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