Cisco TelePresence VCS / Expressway Series < 7.2.4 / 8.1.2 / 8.2.2 Login Security Bypass Vulnerability

critical Nessus Plugin ID 81974
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote host is affected by a security bypass vulnerability.


According to its self-reported version number, the Cisco TelePresence VCS or Expressway Series on the remote host contains an vulnerability due to inadequate validation of parameters passed during the login process. A remote attacker, using a crafted request and knowledge of a valid user name, can bypass authentication requirements and login to the system.


Upgrade to version 7.2.4 / 8.1.2 / 8.2.2 or later.

See Also

Plugin Details

Severity: Critical

ID: 81974

File Name: cisco_telepresence_vcs_sa_CSCur02680.nasl

Version: 1.9

Type: remote

Family: CISCO

Published: 3/20/2015

Updated: 9/9/2021

Dependencies: cisco_telepresence_video_communication_server_detect.nbin

Risk Information

CVSS Score Source: CVE-2015-0653


Risk Factor: Medium

Score: 5.9


Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

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


Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

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

Required KB Items: Cisco/TelePresence_VCS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 3/11/2015

Vulnerability Publication Date: 3/11/2015

Reference Information

CVE: CVE-2015-0653

BID: 73044


CISCO-SA: cisco-sa-20150311-vcs