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CVE-2026-20117— Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities

Quick assessment

Affected
Cisco Cisco Unified Contact Center Express
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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存在跨站脚本漏洞，该漏洞源于基于Web的管理界面未充分验证用户输入，可能导致跨站脚本攻击。

CVSS 6.1 · Medium EPSS 0.21% · P10
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I. Basic Information for CVE-2026-20117

Vulnerability Information
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Vulnerability Title
Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the web-based management interface of Cisco Unified Contact Center Express (Unified CCX) could allow an unauthenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface. This vulnerability exists because the web-based management interface of an affected system does not sufficiently validate user-supplied input. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Unified Contact Center Express 跨站脚本漏洞
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存在跨站脚本漏洞，该漏洞源于基于Web的管理界面未充分验证用户输入，可能导致跨站脚本攻击。
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)

Affected Products

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

II. Public POCs for CVE-2026-20117

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III. Intelligence Information for CVE-2026-20117

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Vendor Advisories for CVE-2026-20117 (1)

Same Patch Batch · Cisco · 2026-03-11 · 6 CVEs total

CVE-2026-20040 8.8 HIGH Cisco IOS XR Software CLI Privilege Escalation Vulnerability
CVE-2026-20046 8.8 HIGH Cisco IOS XR Software CLI Privilege Escalation Vulnerability
CVE-2026-20074 7.4 HIGH Cisco IOS XR Software Multi-Instance Intermediate System-to-Intermediate System Denial of
CVE-2026-20118 6.8 MEDIUM Cisco IOS-XR NCS 5500 and NCS 5700 Egress Packet Network Interfaces Aligner Interrupt Deni
CVE-2026-20116 6.1 MEDIUM Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities

IV. Related Vulnerabilities

Same product: Cisco Unified Contact Center Express
Same vendor: Cisco
Same weakness: CWE-79

V. Comments for CVE-2026-20117

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