Cisco Webex Network Recording Player and Cisco Webex Player Denial of Service Vulnerability

published 2020-06-03 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-24590

cvss: 3.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

A vulnerability in Cisco Webex Network Recording Player and Cisco Webex Player for Microsoft Windows could allow an attacker to cause a process crash resulting in a Denial of service (DoS) condition for the player application on an affected system. The vulnerability exists due to insufficient validation of certain elements with a Webex recording stored in either the Advanced Recording Format (ARF) or the 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 cause the Webex player application to crash when trying to view the malicious file. This vulnerability affects Cisco Webex Network Recording Player and Webex Player releases earlier than Release 3.0 MR3 Security Patch 2 and 4.0 MR3.

Patch / fix

fixed in 2

Cisco Cisco Webex Network Recording Player 3.0 MR3 Security Patch 2, 4.0 MR3
Cisco Cisco Webex Player for Microsoft Windows 3.0 MR3 Security Patch 2, 4.0 MR3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 23 mo ago (2024-11-15)

Exploit prediction

0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
NVD	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

Cisco Cisco Webex Network Recording Player
Cisco Cisco Webex Player for Microsoft Windows

Classification

Weakness

CWE-20 Improper Input Validation

References

quickview.cloudapps.cisco.com /quickview/bug/CSCvs98254
vendor-advisory

Sources

CVE List CVE-2020-3319
NVD CVE-2020-3319

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary