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TI-2020-02894 Aliases CVE-2020-3342GHSA-4f94-mvx7-c9mf

Cisco Webex Meetings Desktop App for Mac Update Feature Code Execution Vulnerability

Priority MEDIUM 47CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.

Summary

A vulnerability in the software update feature of Cisco Webex Meetings Desktop App for Mac could allow an unauthenticated, remote attacker to execute arbitrary code on an affected system. The vulnerability is due to improper validation of cryptographic protections on files that are downloaded by the application as part of a software update. An attacker could exploit this vulnerability by persuading a user to go to a website that returns files to the client that are similar to files that are returned from a valid Webex website. The client may fail to properly validate the cryptographic protections of the provided files before executing them as part of an update. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the user.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03892 90th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco WebEx Meetings Serverall versions—No fix listedCNA
  • Cisco WebEx Meetings Server VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cisco:webex_meetings:*:*:*:*:desktop:mac_os:*:*before 39.5.11VulnerableCisco
  • cpe:2.3:a:cisco:webex_meetings:*:*:*:*:desktop:mac_os:*:* Versions before 39.5.11 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-3342
  2. 2026-10-03 Alias added: GHSA-4f94-mvx7-c9mf
  3. 2026-11-03 EPSS moved to the 90th–95th percentile

References

Advisory 1

  • TI-2019-01300 Cisco Webex Meetings Desktop App and Cisco Webex Productivity Tools Update Service Command Injection Vulnerability CVSS 3.0HIGH 8.8
  • TI-2018-00079 Improper input validation in Cisco WebEx Advanced Recording Format Player CVSS 3.0CRITICAL 9.6
  • TI-2018-00224 Improper input validation in Cisco WebEx Advanced Recording Format file players CVSS 3.0CRITICAL 9.6
  • TI-2020-02913 Cisco Webex Meetings and Cisco Webex Meetings Server Token Handling Unauthorized Access Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2017-09144 Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players CVSS 3.0CRITICAL 9.6
  • TI-2017-09143 Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players CVSS 3.0CRITICAL 9.6
See all 68 →

Sources

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