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Vulnerability of Cisco Unity Express: privilege escalation via CLI

Synthesis of the vulnerability 

An attacker can bypass restrictions via CLI of Cisco Unity Express, in order to escalate his privileges.
Impacted systems: Unity Cisco.
Severity of this alert: 2/4.
Creation date: 21/11/2019.
Références of this alert: cisco-sa-20191120-unity-exp-comm-inject, CSCvq54120, CVE-2019-15986, VIGILANCE-VUL-30929.

Description of the vulnerability 

An attacker can bypass restrictions via CLI of Cisco Unity Express, in order to escalate his privileges.
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This weakness announce impacts software or systems such as Unity Cisco.

Our Vigil@nce team determined that the severity of this vulnerability alert is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this computer threat announce.

Solutions for this threat 

Cisco Unity Express: solution CSCvq54120.
The solution is described on the Cisco site:
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq54120
  https://tools.cisco.com/bugsearch/bug/CSCvq54120
  https://tools.cisco.com/quickview/bug/CSCvq54120
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