CVE-2019-1887

Name: CVE-2019-1887
Creator: NVD / NIST
Published: 2019-07-06T02:15:11.09+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.77%

Last modified Jun 17, 2026

CVE-2019-1887 is a vulnerability of currently unknown severity. A vulnerability in the Session Initiation Protocol (SIP) protocol implementation of Cisco Unified Communications Manager could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of input SIP traffic. EPSS estimates a 1.77% chance of exploitation in the next 30 days.

Description

A vulnerability in the Session Initiation Protocol (SIP) protocol implementation of Cisco Unified Communications Manager could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of input SIP traffic. An attacker could exploit this vulnerability by sending a malformed SIP packet to an affected Cisco Unified Communications Manager. A successful exploit could allow the attacker to trigger a new registration process on all connected phones, temporarily disrupting service.

Metrics

EPSS Probability

1.77%

75.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Unified Communications Manager	10.5\(2.10000.5\)
Cisco	Unified Communications Manager	11.5\(1.10000.6\)
Cisco	Unified Communications Manager	12.0\(1.10000.10\)
Cisco	Unified Communications Manager	12.5\(1.10000.22\)

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-cucm-dosPatch, Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-cucm-dosPatch, Vendor Advisory

Timeline

Published: Jul 6, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-1887?

How severe is CVE-2019-1887?

Severity scoring for CVE-2019-1887 is pending analysis. The EPSS model estimates a 1.77% probability of exploitation in the next 30 days.

How do I fix CVE-2019-1887?

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-2019-1887?

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

Scan your code now

Source: NVD / NIST