CVE-2021-34784

A vulnerability in the web-based management interface of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable Network Manager (EPNM) could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. 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.

• CWE-79
• CWE-79

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-pi-epnm-xss-U2JK537jVendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-pi-epnm-xss-U2JK537jVendor Advisory

Published

Nov 4, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-34779Multiple vulnerabilities exist in the Link Layer Discovery P…8.8
• CVE-2021-3478There's a flaw in OpenEXR's scanline input file functionalit…5.5
• CVE-2021-34780Multiple vulnerabilities exist in the Link Layer Discovery P…8.8
• CVE-2021-34781A vulnerability in the processing of SSH connections for mul…7.5
• CVE-2021-34782A vulnerability in the API endpoints for Cisco DNA Center co…4.3
• CVE-2021-34783A vulnerability in the software-based SSL/TLS message handle…7.5
• CVE-2021-34785Multiple vulnerabilities in Cisco BroadWorks CommPilot Appli…7.2
• CVE-2021-34786Multiple vulnerabilities in Cisco BroadWorks CommPilot Appli…4.9
• CVE-2021-34787A vulnerability in the identity-based firewall (IDFW) rule p…5.3
• CVE-2021-34788A vulnerability in the shared library loading mechanism of C…7
• CVE-2021-34789A vulnerability in the web-based management interface of Cis…4.8
• CVE-2021-3479There's a flaw in OpenEXR's Scanline API functionality in ve…5.5