CVE-2020-3471
MEDIUMCisco Webex Meetings Server - Unauthenticated Bidirectional Audio Maintenance via Synchronization Issue
Title source: llmDescription
A vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to maintain bidirectional audio despite being expelled from an active Webex session. The vulnerability is due to a synchronization issue between meeting and media services on a vulnerable Webex site. An attacker could exploit this vulnerability by sending crafted requests to a vulnerable Cisco Webex Meetings or Cisco Webex Meetings Server site. A successful exploit could allow the attacker to maintain the audio connection of a Webex session despite being expelled.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-info-leak-PhpzB3sG
Scores
CVSS v3
6.5
EPSS
0.0173
EPSS Percentile
74.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-662
CWE-20
Status
published
Products (3)
cisco/webex_meetings_server
3.0 maintenance_release2 (2 CPE variants)
cisco/webex_meetings_server
4.0 (3 CPE variants)
cisco/webex_meetings_server
< 3.0
Published
Nov 18, 2020
Tracked Since
Feb 18, 2026