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Vulnerability record · CVE-2021-40115 · published 4 November 2021

CVE-2021-40115: Cisco collaboration meeting rooms cross-site scripting vulnerability

Cisco · Collaboration Meeting Rooms

A vulnerability in Cisco Webex Video Mesh could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. 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 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 45.6% 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
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability in Cisco Webex Video Mesh could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. 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 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

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

References

LinkTags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-videomesh-xss-qjm2BDQf Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-videomesh-xss-qjm2BDQf Vendor Advisory

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

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Source: NIST National Vulnerability Database (record CVE-2021-40115), CISA KEV, FIRST EPSS (scores of 2026-10-07). This page is refreshed as NVD updates the record.