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TI-2021-01099 Aliases CVE-2021-1372GHSA-r5cq-f6p7-hpq4

Cisco Webex Meetings Desktop App and Webex Productivity Tools for Windows Shared Memory…

Priority LOW 25CWE-202Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

A vulnerability in Cisco Webex Meetings Desktop App and Webex Productivity Tools for Windows could allow an authenticated, local attacker to gain access to sensitive information on an affected system. This vulnerability is due to the unsafe usage of shared memory by the affected software. An attacker with permissions to view system memory could exploit this vulnerability by running an application on the local system that is designed to read shared memory. A successful exploit could allow the attacker to retrieve sensitive information from the shared memory, including usernames, meeting information, or authentication tokens. Note: To exploit this vulnerability, an attacker must have valid credentials on a Microsoft Windows end-user system and must log in after another user has already authenticated with Webex on the same end-user system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00424 36th 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
Partial

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 Productivity Toolsall versions—No fix listedCNA
  • Cisco Webex Productivity Tools VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:a:cisco:webex_meetings:*:*:*:*:slow_channel:*:*:*before 40.6VulnerableCisco
cpe:2.3:a:cisco:webex_meetings:*:*:*:*:latest_channel:*:*:*before 40.10VulnerableCisco
cpe:2.3:a:cisco:webex_meetings_server:*:*:*:*:*:*:*:*before 4.0VulnerableCisco
cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:*4.0VulnerableCisco
cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release1:*:*:*:*:*:*4.0 maintenance_release1VulnerableCisco
cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release2:*:*:*:*:*:*4.0 maintenance_release2VulnerableCisco
cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3:*:*:*:*:*:*4.0 maintenance_release3VulnerableCisco
cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3_security_patch3:*:*:*:*:*:*4.0 maintenance_release3_security_patch3VulnerableCisco
  • cpe:2.3:a:cisco:webex_meetings:*:*:*:*:slow_channel:*:*:* Versions before 40.6 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings:*:*:*:*:latest_channel:*:*:* Versions before 40.10 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings_server:*:*:*:*:*:*:*:* Versions before 4.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:* Versions 4.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release1:*:*:*:*:*:* Versions 4.0 maintenance_release1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release2:*:*:*:*:*:* Versions 4.0 maintenance_release2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3:*:*:*:*:*:* Versions 4.0 maintenance_release3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3_security_patch3:*:*:*:*:*:* Versions 4.0 maintenance_release3_security_patch3 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-1372
  2. 2026-10-03 Alias added: GHSA-r5cq-f6p7-hpq4

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-2020-02894 Cisco Webex Meetings Desktop App for Mac Update Feature Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2017-09144 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