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TI-2021-01230 Aliases CVE-2021-1503GHSA-gwp9-m42j-2f54

Cisco Webex Network Recording Player and Webex Player Memory Corruption Vulnerability

Priority LOW 38CWE-119Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A vulnerability in Cisco Webex Network Recording Player for Windows and MacOS and Cisco Webex Player for Windows and MacOS could allow an attacker to execute arbitrary code on an affected system. This vulnerability is due to insufficient validation of values in Webex recording files that are in either Advanced Recording Format (ARF) or Webex Recording Format (WRF). An attacker could exploit this vulnerability by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01024 63rd 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 Meetingsall versions—No fix listedCNA
  • Cisco Webex Meetings VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:*4.0VulnerableCisco
cpe:2.3:a:cisco:webex_player:*:*:*:*:*:macos:*:*before 41.2VulnerableCisco
cpe:2.3:a:cisco:webex_player:*:*:*:*:*:windows:*:*before 41.2VulnerableCisco
  • cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:* Versions 4.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_player:*:*:*:*:*:macos:*:* Versions before 41.2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_player:*:*:*:*:*:windows:*:* Versions before 41.2 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-1503
  2. 2026-10-03 Alias added: GHSA-gwp9-m42j-2f54

References

Advisory 1

  • TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
  • TI-2017-02920 Memory corruption in Cisco WebEx browser extensions CVSS 3.0HIGH 8.8
  • TI-2018-00079 Improper input validation in Cisco WebEx Advanced Recording Format Player 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-2017-09140 Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players CVSS 3.0CRITICAL 9.6
See all 135 →

Sources

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