Cisco Webex Meetings Desktop App for Windows Arbitrary File Overwrite (cisco-sa-webex-desktop-app-OVSfpVMj)

medium Nessus Plugin ID 139799


The remote device is missing a vendor-supplied security patch


According to its self-reported version, Cisco Webex Meetings Desktop App for Windows is affected by a vulnerability due to improper validation of URL parameters that are sent from a website to the affected application. An unauthenticated, remote attacker can exploit this, by persuading a user to follow a URL to a website that is designed to submit crafted input to the affected application, in order to overwrite arbitrary files.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvt80020

See Also

Plugin Details

Severity: Medium

ID: 139799

File Name: cisco-sa-webex-desktop-app-OVSfpVMj.nasl

Version: 1.5

Type: local

Agent: windows

Family: Windows

Published: 8/25/2020

Updated: 6/29/2021

Supported Sensors: Nessus Agent

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2020-3440


Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cisco:webex_meetings

Required KB Items: installed_sw/Cisco Webex Meetings

Exploit Ease: No known exploits are available

Patch Publication Date: 8/19/2020

Vulnerability Publication Date: 8/19/2020

Reference Information

CVE: CVE-2020-3440


CISCO-SA: cisco-sa-webex-desktop-app-OVSfpVMj

IAVA: 2020-A-0390-S

CWE: 22