CVE-2020-3420

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by inserting malicious data into a specific data field in 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.There are no workarounds that address this vulnerability.
Configurations

Configuration 1 (hide)

cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*

History

06 Aug 2025, 13:57

Type Values Removed Values Added
References () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-xss-bLZw4Ctq - () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-xss-bLZw4Ctq - Vendor Advisory
References () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sa-rv-routers-xss-K7Z5U6q3 - () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sa-rv-routers-xss-K7Z5U6q3 - Not Applicable
First Time Cisco unified Communications Manager
Cisco
CPE cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*

Information

Published : 2024-11-18 16:15

Updated : 2025-08-06 13:57


NVD link : CVE-2020-3420

Mitre link : CVE-2020-3420

CVE.ORG link : CVE-2020-3420


JSON object : View

Products Affected

cisco

  • unified_communications_manager
CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')