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Path traversal in Cisco TelePresence Collaboration Endpoint, TelePresence Codec and RoomOS

Published: 2020-01-27
Severity High
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-3143
Exploitation vector Network
Public exploit N/A
Vulnerable software
Cisco TelePresence Collaboration Endpoint (CE)
Hardware solutions / Office equipment, IP-phones, print servers

Cisco TelePresence Codec (TC)
Server applications / Conferencing, Collaboration and VoIP solutions

Cisco RoomOS
Operating systems & Components / Operating system

Vendor Cisco Systems, Inc

Security Advisory

This security advisory describes one high risk vulnerability.

1) Path traversal

Severity: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-3143

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No


The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the video endpoint API. A remote authenticated attacker can send a specially crafted HTTP request and read and write arbitrary files on the system.

This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco TelePresence CE Software, Cisco TC Software, or Cisco RoomOS Software:

  • Cisco TelePresence Integrator C Series
  • Cisco TelePresence MX Series
  • Cisco TelePresence SX Series
  • Cisco TelePresence System EX Series
  • Cisco Webex Board
  • Cisco Webex DX Series
  • Cisco Webex Room Series


Install update from vendor's website.

Vulnerable software versions

Cisco TelePresence Collaboration Endpoint (CE): 8.3.5, 8.3.6, 8.3.7, 9.0.1, 9.1.1, 9.1.2, 9.1.3, 9.1.4, 9.1.5, 9.1.6, 9.2.1, 9.2.2, 9.2.3, 9.2.4, 9.2.5, 9.2.6, 9.3.0, 9.3.1, 9.3.2, 9.3.3, 9.4.0

Cisco TelePresence Codec (TC): 7.0.1, 7.0.2, 7.1.0, 7.1.1, 7.1.2, 7.1.3, 7.1.4, 7.2.0, 7.2.1, 7.3.0, 7.3.1, 7.3.2, 7.3.3, 7.3.4, 7.3.5, 7.3.7, 7.3.8, 7.3.9, 7.3.11, 7.3.12, 7.3.13, 7.3.14, 7.3.15, 7.3.16, 7.3.17, 7.3.18, 7.3.19

Cisco RoomOS: -

CPE External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.