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TI-2021-17310 Aliases CVE-2021-40115GHSA-r2fh-qw8f-487x

Cisco Webex Video Mesh Cross-Site Scripting Vulnerability

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00774 55th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Webex Video Meshall versions—No fix listedCNA
  • Cisco Webex Video Mesh VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:cisco:collaboration_meeting_rooms:2.0:*:*:*:*:*:*:*2.0VulnerableCisco
cpe:2.3:a:cisco:webex_video_mesh:*:*:*:*:*:*:*:*before 2021.10.18.2439mVulnerableCisco
  • cpe:2.3:a:cisco:collaboration_meeting_rooms:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_video_mesh:*:*:*:*:*:*:*:* Versions before 2021.10.18.2439m Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40115
  2. 2026-10-03 Alias added: GHSA-r2fh-qw8f-487x

References

Advisory 1

  • TI-2018-03923 Uncontrolled resource consumption in Linux Kernel CVSS 3.1HIGH 7.5
  • TI-2019-12044 Cisco Webex Video Mesh Node Command Injection Vulnerability CVSS 3.1HIGH 7.2
  • TI-2021-01227 Cisco Webex Video Mesh Arbitrary Site Redirection Vulnerability CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences