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Vulnerability record · CVE-2021-34742 · published 6 October 2021

CVE-2021-34742: Cisco vision dynamic signage director cross-site scripting vulnerability

Cisco · Vision Dynamic Signage Director

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.

6.1 CVSS 3.1 Medium EPSS 0.77% · top 46.0% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
0.77%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cvdsd-xss-fvdj6HK Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cvdsd-xss-fvdj6HK Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-1917Cisco vision dynamic signage director improper authentication vulnerabilityA vulnerability in the REST API interface of Cisco Vision Dynamic Signage Director could allow an unauthenticated, remote attacker to bypass authenti…EPSS 5.3%6.5CVE-2020-3598Cisco vision dynamic signage director missing authentication for critical function vulnerabilityA vulnerability in the web-based management interface of Cisco Vision Dynamic Signage Director could allow an unauthenticated, remote attacker to acc…EPSS 0.95%6.5CVE-2019-16004Cisco vision dynamic signage director missing authentication for critical function vulnerabilityA vulnerability in the REST API endpoint of Cisco Vision Dynamic Signage Director could allow an unauthenticated, remote attacker to bypass authentic…EPSS 1.0%6.3CVE-2020-3485Cisco vision dynamic signage director permissions and access controls vulnerabilityA vulnerability in the role-based access control (RBAC) functionality of the web management software of Cisco Vision Dynamic Signage Director could a…EPSS 0.68%5.3CVE-2020-3484Cisco vision dynamic signage director incorrect default permissions vulnerabilityA vulnerability in the web-based management interface of Cisco Vision Dynamic Signage Director could allow an unauthenticated, remote attacker to vie…EPSS 1.1%4.9CVE-2020-3490Cisco vision dynamic signage director path traversal vulnerabilityA vulnerability in the web-based management interface of Cisco Vision Dynamic Signage Director could allow an authenticated, remote attacker with adm…EPSS 3.0%4.9CVE-2020-3450Cisco vision dynamic signage director sql injection vulnerabilityA vulnerability in the web-based management interface of Cisco Vision Dynamic Signage Director could allow an authenticated, remote attacker with adm…EPSS 1.0%4.8CVE-2020-3491Cisco vision dynamic signage director cross-site scripting vulnerabilityA vulnerability in the web-based management interface of Cisco Vision Dynamic Signage Director could allow an authenticated, remote attacker with adm…EPSS 0.62%

Source: NIST National Vulnerability Database (record CVE-2021-34742), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.