CVE-2021-34742

A vulnerability in the web-based management interface of Cisco Vision Dynamic Signage Director could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface on an affected device. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or access sensitive, browser-based information.

• CWE-79
• CWE-79

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cvdsd-xss-fvdj6HKVendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cvdsd-xss-fvdj6HKVendor Advisory

Published

Oct 6, 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-2021-34737A vulnerability in the DHCP version 4 (DHCPv4) server featur…7.5
• CVE-2021-34738Multiple vulnerabilities in the web-based management interfa…6.1
• CVE-2021-34739A vulnerability in the web-based management interface of mul…8.1
• CVE-2021-3474There's a flaw in OpenEXR in versions before 3.0.0-beta. A c…5.3
• CVE-2021-34740A vulnerability in the WLAN Control Protocol (WCP) implement…7.4
• CVE-2021-34741A vulnerability in the email scanning algorithm of Cisco Asy…7.5
• CVE-2021-34743A vulnerability in the application integration feature of Ci…7.1
• CVE-2021-34744Multiple vulnerabilities in Cisco Business 220 Series Smart …4.9
• CVE-2021-34745A vulnerability in the AppDynamics .NET Agent for Windows co…7.8
• CVE-2021-34746A vulnerability in the TACACS+ authentication, authorization…9.8
• CVE-2021-34748A vulnerability in the web-based management interface of Cis…8.8
• CVE-2021-34749A vulnerability in Server Name Identification (SNI) request …8.6