TI-2020-02704 Aliases CVE-2020-3142 GHSA-58r3-xwfg-7j3x

Cisco Webex Meetings Suite and Cisco Webex Meetings Online Unauthenticated Meeting Join Vulnerability

MEDIUM 42CWE-284Published 2020-01-26 · Updated 2024-11-15

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-284.

Summary

A vulnerability in Cisco Webex Meetings Suite sites and Cisco Webex Meetings Online sites could allow an unauthenticated, remote attendee to join a password-protected meeting without providing the meeting password. The connection attempt must initiate from a Webex mobile application for either iOS or Android. The vulnerability is due to unintended meeting information exposure in a specific meeting join flow for mobile applications. An unauthorized attendee could exploit this vulnerability by accessing a known meeting ID or meeting URL from the mobile device’s web browser. The browser will then request to launch the device’s Webex mobile application. A successful exploit could allow the unauthorized attendee to join the password-protected meeting. The unauthorized attendee will be visible in the attendee list of the meeting as a mobile attendee. Cisco has applied updates that address this vulnerability and no user action is required. This vulnerability affects Cisco Webex Meetings Suite sites and Cisco Webex Meetings Online sites releases earlier than 39.11.5 and 40.1.3.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0149 74th percentileScored 2026-11-07

Fix Fixed Cisco Webex Meetings (Cisco): 39.11.5, 40.1.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Webex Meetings	before 39.11.5; before 40.1.3	39.11.5, 40.1.3	Patch available	CNA

Cisco Webex Meetings VendorCisco Affected before 39.11.5; before 40.1.3 Fixed in 39.11.5, 40.1.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:webex_meetings_online::::::::	before 39.11.5; before 40.1.3	Vulnerable	Cisco

cpe:2.3:a:cisco:webex_meetings_online:*:*:*:*:*:*:*:* Versions before 39.11.5; before 40.1.3 Vulnerable ·Cisco

Remediation

Fix · CNA Cisco Webex Meetings (Cisco) Fixed in 39.11.5, 40.1.3

Timeline

2026-10-02 Threatist record created from CVE-2020-3142
2026-10-03 Alias added: GHSA-58r3-xwfg-7j3x

References

Advisory 1

20200124 Cisco Webex Meetings Suite and Cisco Webex Meetings Online Unauthenticated Meeting Join Vulnerability

TI-2019-01300 Cisco Webex Meetings Desktop App and Cisco Webex Productivity Tools Update Service Command Injection Vulnerability CVSS 3.0HIGH 8.8
TI-2018-00246 Improper input validation in Cisco WebEx Advanced Recording Format Player CVSS 3.0HIGH 8.8
TI-2020-02689 Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.8
TI-2022-05322 Cisco Webex Meetings Java Deserialization Vulnerability CVSS 3.1HIGH 8.8
TI-2020-02755 Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulnerability CVSS 3.1HIGH 7.8
TI-2020-02690 Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.8

See all 58 →

Sources

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