Cisco Expressway Series / Cisco TelePresence VCS < 14.3.1 Command Injection (cisco-sa-expressway-injection-X475EbTQ)

high Nessus Plugin ID 180164


The remote device is missing a vendor-supplied security patch.


The Cisco Expressway Series or Cisco TelePresence Video Communication Server (VCS) running on the remote host is prior to 14.3.1. It is, therefore, affected by a command injection vulnerability as described in the cisco-sa-expressway-injection-X475EbTQ advisory.

This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface of an affected device. A successful exploit could allow the attacker to establish a remote shell with root privileges. This exploit would require running a vulnerable release and to have the Automatic Certification Revocation Lists (CRL) updates feature enabled. The Automatic CRL update feature is disabled by default. However, an attacker with read-write privileges on the application could enable this feature to carry out the exploit.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwf57215

See Also

Plugin Details

Severity: High

ID: 180164

File Name: cisco-sa-expressway-injection-X475EbTQ.nasl

Version: 1.3

Type: remote

Family: CISCO

Published: 8/24/2023

Updated: 2/8/2024

Supported Sensors: Nessus

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:C

CVSS Score Source: CVE-2023-20209


Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/h:cisco:telepresence_video_communication_server, cpe:/a:cisco:telepresence_video_communication_server_software

Required KB Items: Cisco/TelePresence_VCS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 8/16/2023

Vulnerability Publication Date: 8/16/2023

Reference Information

CVE: CVE-2023-20209

CISCO-SA: cisco-sa-expressway-injection-X475EbTQ

IAVA: 2023-A-0431-S