CVE-2021-40115

Cisco Webex Video Mesh Cross-Site Scripting Vulnerability

MEDIUM
6.1
CVSS Score
Published: November 4, 2021 at 03:35 PM UTC
Updated: June 17, 2026 at 04:06 AM UTC
2 products affected across 1 vendorCollaboration Meeting RoomsWebex Video Mesh

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2021.10.18.2439m
Affected range stops below 2021.10.18.2439m, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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