What is the CVSS score of CVE-2026-20117?

CVE-2026-20117 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Unified Contact Center Express are affected by CVE-2026-20117?

CVE-2026-20117 presents moderate security risk, a cross-site scripting vulnerability rated CVSS 6.1. Attackers could inject scripts to steal sessions or perform actions as authenticated users.

How to fix or mitigate CVE-2026-20117?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Unified Contact Center Express CVE-2026-20117

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-03-11 psirt@cisco.com

Cisco XSS Unified Contact Center Express

6.1

CVSS 3.1 · Vendor: cisco

Severity by source

Vendor (cisco) PRIMARY

6.1 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from Vendor (cisco) · only source for this CVE.

CVSS VectorVendor: cisco

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:06 vuln.today

CVE Published

Mar 11, 2026 - 17:16 nvd

MEDIUM 6.1

DescriptionCVE.org

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.

AnalysisAI

Unauthenticated attackers can inject malicious scripts into Cisco Unified CCX's web management interface due to insufficient input validation, enabling XSS attacks against administrators and users. Successful exploitation allows arbitrary JavaScript execution within the browser context or theft of sensitive session information. No patch is currently available.

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). 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.

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.