CVE-2018-0139

Name: CVE-2018-0139
Creator: NVD / NIST
Published: 2018-02-22T00:29:00.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 2.37%

Last modified Jun 17, 2026

CVE-2018-0139 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. A vulnerability in the Interactive Voice Response (IVR) management connection interface for Cisco Unified Customer Voice Portal (CVP) could allow an unauthenticated, remote attacker to cause the IVR connection to disconnect, creating a system-wide denial of service (DoS) condition. The vulnerability is due to improper handling of a TCP connection request when the IVR connection is already established. EPSS estimates a 2.37% chance of exploitation in the next 30 days.

Description

A vulnerability in the Interactive Voice Response (IVR) management connection interface for Cisco Unified Customer Voice Portal (CVP) could allow an unauthenticated, remote attacker to cause the IVR connection to disconnect, creating a system-wide denial of service (DoS) condition. The vulnerability is due to improper handling of a TCP connection request when the IVR connection is already established. An attacker could exploit this vulnerability by initiating a crafted connection to the IP address of the targeted CVP device. An exploit could allow the attacker to disconnect the IVR to CVP connection, creating a DoS condition that prevents the CVP from accepting new, incoming calls while the IVR automatically attempts to re-establish the connection to the CVP. This vulnerability affects Cisco Unified Customer Voice Portal (CVP) Software Release 11.5(1). Cisco Bug IDs: CSCve70560.

Metrics

CVSS 3.1

8.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS Probability

2.37%

81.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Unified Customer Voice Portal	11.5\(1\)
Cisco	Unified Customer Voice Portal	11.6

References

http://www.securityfocus.com/bid/103124Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040414Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180221-cvpVendor Advisory
http://www.securityfocus.com/bid/103124Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040414Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180221-cvpVendor Advisory

Timeline

Published: Feb 22, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-0139?

How severe is CVE-2018-0139?

CVE-2018-0139 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 2.37% probability of exploitation in the next 30 days.

How do I fix CVE-2018-0139?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-0139?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST