// For flags

CVE-2021-1420

Cisco Webex Meetings HTML Injection Vulnerability

Severity Score

4.7
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

A vulnerability in certain web pages of Cisco Webex Meetings could allow an unauthenticated, remote attacker to modify a web page in the context of a user's browser. The vulnerability is due to improper checks on parameter values in affected pages. An attacker could exploit this vulnerability by persuading a user to follow a crafted link that is designed to pass HTML code into an affected parameter. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks.

Una vulnerabilidad en determinadas páginas web de Cisco Webex Meetings, podría permitir a un atacante remoto no autenticado modificar una página web en el contexto del navegador de un usuario. La vulnerabilidad es debido a comprobaciones inapropiadas de los valores de los parámetros en páginas afectadas. Un atacante podría explotar esta vulnerabilidad al persuadir a un usuario para seguir un vínculo elaborado que está diseñado para pasar código HTML a un parámetro afectado. Una explotación con éxito podría permitir al atacante alterar el contenido de una página web para redireccionar al usuario a sitios web potencialmente maliciosos, o el atacante podría usar esta vulnerabilidad para conducir más ataques del lado del cliente

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2020-11-13 CVE Reserved
  • 2021-04-08 CVE Published
  • 2024-04-10 EPSS Updated
  • 2024-11-08 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
Search vendor "Cisco"
 Webex Meetings
Search vendor "Cisco" for product "Webex Meetings"
--
Affected