CVE-2020-3541: Cisco Webex Meetings Client for Windows, Webex Meetings Desktop App, and Webex Teams Information Disclosure Vulnerability

Severity: medium (CVSS 4.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-09-04 · updated 2026-06-17
Weakness: CWE-200

Description

A vulnerability in the media engine component of Cisco Webex Meetings Client for Windows, Cisco Webex Meetings Desktop App for Windows, and Cisco Webex Teams for Windows could allow an authenticated, local attacker to gain access to sensitive information. The vulnerability is due to unsafe logging of authentication requests by the affected software. An attacker could exploit this vulnerability by reading log files that are stored in the application directory. A successful exploit could allow the attacker to gain access to sensitive information, which could be used in further attacks.

Affected products

Cisco Webex Meetings: before 39.5.25; from 40.6.0 before 40.6.6 — fixed in 39.5.25, 40.6.6
Cisco Webex Teams: before 3.0.15711.0 — fixed in 3.0.15711.0

How to fix

Upgrade to a fixed version: Cisco Webex Meetings 39.5.25, 40.6.6; Cisco Webex Teams 3.0.15711.0. Check the vendor advisory for mitigations.

References

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